Answers
u need to find the measure of arc GK to get arc HGJ. add all the given numbers and minus it from 360; a full circle. u would get 50, so then add HG, GK, and KJ which is 155+50+70 to get 275
Related Questions
Given the function f(x) =3x^2-6x-9 is the point (1,-12) on the graph of f?
Answers
The point P ( 1 , -12 ) lies on the graph of the function f ( x ) = 3x² - 6x - 9
Given data ,
Let the function be represented as f ( x )
Now ,
Let the point be P ( 1 , -12 )
And , to determine if the point (1, -12) is on the graph of the function f(x) = 3x² - 6x - 9, we can substitute x = 1 and y = -12 into the equation and check if it satisfies the equation.
Plugging in x = 1 into the equation, we get:
f(1) = 3(1)² - 6(1) - 9
f(1) = 3 - 6 - 9
f(1) = -12
Hence , when x = 1, f(x) = -12. Since f(1) = -12 and the given point is (1, -12), the point (1, -12) does lie on the graph of the function f(x) = 3x² - 6x - 9
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A
B
D
31.
An expression is shown.
6(2+3)² - 1
What is the value of the expression?
A. 20
B. 59
C. 149
D. 899
Answers
Answer:
149
Step-by-step explanation:
Which is an asymptote of the function h(x) = 9^x?
Answers
Answer:
The asymptote is 0.
Step-by-step explanation:
In [tex]f(x)=a^x+b[/tex], b is the asymptote.
Answer:
it's 0
Step-by-step explanation:
30% of 26.5 is what number?
Answers
Answer:
7.95
Step-by-step explanation:
We can work percentage problems using the formula
P%x = y, where P is the percentage, x is the "of" value in the problem, and y is the "is" value in the problem.
First, we must convert the percentage to decimal form for an easier problem We can either dividing the percentage by 100 since a percentage is always out of 100 (e.g., 30 / 100 = 0.30) Or we can imagine the percentage sign as a decimal and move it over two places to the right (30% = 30.00 = 0.30)Thus, in the formula, our p value is 0.30, our x ("of") value is 26.5 and we're trying to find our y ("is") value:
0.30 * 26.5 = y
7.95 = y
Therefore, 30% of 26.5 is 7.95
20 students each rolled dice 5 times each to measure the median. Here is the data in the picture attached. What can we infer from this graph by looking at the median data?
A. when rolling a dice multiple times, the median is less likely to fall between numbers 1 and 6.
B. it's not possible to tell the likelihood of where the median is going to be when measuring probability since rolling dice is completely randomized, etc.
C. some other response
Answers
Considering the given graph, we infer that while rolling a dice is random, the median values do exhibit some patterns that can be analyzed and used to make predictions about the expected values.
What is the information from the graph?Looking at the median data from the graph, we can infer that option A is not true, as the median appears to be equally likely to fall between any two numbers from 1 to 6. However, we can also infer that option B is not entirely accurate.
While it is true that rolling a dice is random and each roll is independent, we can observe patterns in the median data.
For example, the median values are more likely to be closer to 3.5, which is the theoretical median value of a fair six-sided dice. This suggests that the more times the dice is rolled, the more likely the median value will approach the expected value.
We can also observe that the spread of the median values tends to decrease as the number of rolls increases, indicating that more rolls lead to more consistent results.
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A BOAT NEEDS TO TRAVEL NORTH AT 30 km/h AND A CONSTANT CURRENT OF 4km /h IS FLOWING IN NORTH-WEST DIRECTION WHAT IS THE EQUIVALENT SPEED IN STILL WATER TO ACHIEVE ACTUAL SPEED OF 30 km/h?
Answers
The equivalent speed in still water to achieve the actual speed is 27.172 km/h
Given data ,
The boat's velocity vector in still water will have two components: one along the north direction (opposite to the current) with magnitude "v" km/h, and one along the northwest direction (due to the current) with magnitude 4 km/h.
Since the boat is moving in a direction that is 45 degrees between north and northwest, we can use trigonometry to find the component of velocity in the northwest direction. By using the cosine of 45 degrees, we get:
Component of velocity in northwest direction = 4 km/h x cos(45 degrees) = 4 km/h x 0.707 = 2.828 km/h
Now , adding the components of velocity in the north and northwest directions should result in a speed of 30 km/h, which is the real speed needed to go through still water.
v + 2.828 = 30
v = 27.172 km/h
Hence , the equivalent speed of the boat in still water to achieve an actual speed of 30 km/h is approximately 27.172 km/h
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4. The TAs repeat this process of tagging birds, except
this time they tag a population of 522 blue jays on the
fourth day of the survey. Over the course of the study they
calculate the per capita birth rate to be 0.10 and the per
capita death rate to be 0.07. With this information,
calculate the following:
a. How many blue jays were born during the study?
Round your answer to the nearest whole number.
b. How many blue jays died during the study? Round
your answer to the nearest whole number:
c. What is the per capita growth rate of the blue jay
population? Round your answer to the nearest
hundredth.
Show work here:
A.
Answers
Answer:
Step-by-step explanation:
Which is an equation that shifts the graph of the function f(x) = √x to the left 5 units?
Answers
An equation that shifts the graph of the function f(x) = √x to the left 5 units is: f(x) = √(x + 5)
What is the equation after the function transformation?There are different methods of transformation of functions or graphs and they are:
1) Translation
2) Reflection
3) Dilation
4) Rotation
Now, we can shift a function upwards, downwards, to the left or right as the case may be.
In this case we want to shift the function to the left by 5 units.
Shifting the function 5 units to the left means translating the function 5 units along the x-axis. So we will add 5 to x to get:
f(x) = √(x + 5)
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URGENT!! ILL GIVE
BRAINLIEST! AND 100 POINTS
Answers
The correct statement and value should be matched as follows;
The percent of time that customers at the old store bought milkshakes: 20%.
The percent of time that customers at the new store bought milkshakes: 26%.
The percent of total sales that were Ice Cream sales in both shops: 78%.
The percent of new store sales out of the total sales for both shops: 35%.
How to determine correct statement and value?First of all, we would have to determine the total number of sales for both the Old store with respect to the number of servings of ice cream and milk shakes that were sold;
Total sales = 52,100 + 13,400
Total sales = 65,500
Next, we would determine the percent of time that customers at the old store bought milk shakes;
Percent = 13,400/65,500 × 100
Percent = 20.46 ≈ 20%.
Similarly, we would determine the percent of time that customers at the new store bought milk shakes;
Total sales = 25,800 + 9,200
Total sales = 35,000
Percent = 9,200/35,000 × 100
Percent = 26.29 ≈ 26%.
Total sales in both stores = 52,100 + 13,400 + 25,800 + 9,200
Total sales in both stores = 100,500
Percent of ice cream in both stores = (52,100 + 25,800)/100,500 × 100
Percent of ice cream in both stores = 77.51 ≈ 78%.
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Juan deposited $7000 into an account with a 3.4% annual interest rate, compounded quarterly. Assuming that no withdrawals are made, how long will it take for the investment to grow to $9737?
Do not round any intermediate computations, and round your answer to the nearest hundredth.
Answers
Answer:
It will take approximately 6.89 years for the investment to grow to $9737.
Step-by-step explanation:
We can use the formula for compound interest to solve this problem:
A = P(1 + r/n)^(nt)
Where:
A = the future value of the investment
P = the present value of the investment
r = the annual interest rate (as a decimal)
n = the number of times the interest is compounded per year
t = the number of years
We know that P = $7000, r = 0.034, n = 4 (since the interest is compounded quarterly), and we want to find t when A = $9737.
$9737 = $7000(1 + 0.034/4)^(4t)
Divide both sides by $7000:
1.391 = (1 + 0.034/4)^(4t)
Take the natural logarithm of both sides:
ln(1.391) = ln[(1 + 0.034/4)^(4t)]
Use the power rule of logarithms:
ln(1.391) = 4t * ln(1 + 0.034/4)
Divide both sides by 4 ln(1 + 0.034/4):
t = ln(1.391) / [4 * ln(1 + 0.034/4)]
Using a calculator, we find:
t ≈ 6.89 years
Therefore, it will take approximately 6.89 years for the investment to grow to $9737.
TOPIC 1 ANGLES AND TRIANGLES
SKILLS PRACTICE continued
PROBLEM SET 2: Classifying Angles
> Identify each pair of angles as complementary, supplementary, or vertical angles.
Answers
Each pair of angles has been identified as adjacent, complementary, supplementary, or vertical angles as shown in the image attached below.
What is a complementary angle?In Mathematics and Geometry, a complementary angle can be defined as two (2) angles or arc whose sum is equal to 90 degrees (90°);
55 + 35 = 90°
What are adjacent angles?In Mathematics and Geometry, adjacent angles can be defined as two (2) angles that share a common vertex and a common side. This ultimately implies that, both angles 1 and 2, 5 and 6, 9 and 10 are pair of adjacent angles.
In conclusion, the linear pair theorem is sometimes referred to as linear pair postulate (supplementary angle) and it states that the measure of two angles would add up to 180° provided that they both form a linear pair.
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plsss help asp giving out brainiest for best one
Answers
The measure of m(ZR) would be 145°.
What is secant ?In geometry, a secant is a straight line that intersects a curve at two or more points. A secant line is used to study the properties of the curve such as its slope, curvature, and points of intersection with other curves. In the context of circles, a secant is a line that intersects a circle at two points, creating a chord. A secant is different from a tangent, which is a line that intersects a curve or circle at only one point and is perpendicular to the curve at that point.
Now we know that if Two secants intersect inside the circle.
Then according a property of intersecting chords.
m(ZR) - m(KV) = 2 (30°)
(5x+10)° - (3x+4)° = 60°
(5x+10° - 3x - 4°)= 60°
2x+6°= 60°
2x = 60° - 6°
2x = 54°
x = 27°
Now put the value in m(ZR)
m(ZR) = (5x27+10)°
m(ZR) = 145°
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suppose mapping f : Z->Z is defined as f(x)=x^2 (Z denotes the set of integers). Show that f is a function
Answers
For any integer x, x^2 is also an integer. Therefore, for every element in the domain of f(x), there exists an element in the range of f(x).
Now we need to show that this element in the range is unique. Suppose there exist two elements a and b in Z such that a^2 = b^2. Then we have:
a^2 - b^2 = 0
(a - b)(a + b) = 0
Since a and b are integers, either a - b = 0 or a + b = 0. If a - b = 0, then a = b and hence the element in the range is unique. If a + b = 0, then a = -b and hence again the element in the range is unique.
Therefore, we have shown that for every element in the domain of f(x), there exists a unique element in the range of f(x), which means that f(x) = x^2 is indeed a function.
Sources you can check to learn more about it:
(2) Determining if a function is invertible (video) | Khan Academy. https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:composite/x9e81a4f98389efdf:invertible/v/determining-if-a-function-is-invertible.
(3) How to find the range of a function (video) | Khan Academy. https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:functions/x2f8bb11595b61c86:introduction-to-the-domain-and-range-of-a-function/v/range-of-a-function.
What is the simplest form of the expression? 6x - 4y - 2x /2
Answers
The simplest form of the expression 6x - 4y - 2x / 2 is 5x - 4y.
What is Simplest form?
In mathematics, simplest form refers to the expression that has been simplified or reduced as much as possible. This means that no further simplification or reduction can be done without changing the value of the expression.
The expression 6x - 4y - 2x / 2 can be simplified using the order of operations (PEMDAS) as follows:
6x - 4y - 2x / 2
= 6x - 4y - x (since 2x / 2 = x)
= 5x - 4y
Therefore, the simplest form of the expression 6x - 4y - 2x / 2 is 5x - 4y.
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The advertising fee for a 30-second spot on the TV show Deal or No Deal is $165,000. The show averages 16.1 million viewers. (Source: USA Today, December 18, 2006) What is the advertiser's cost per viewer for a 30-second ad? Round to the nearest cent.
Answers
Te advertiser's cost per viewer for a 30-second ad is $0.01025.
How do we get the cost per viewer?Cost per view means an ads model that charges the advertiser whenever a user watches an ad for a set duration.
To calculate the cost per viewer for the advert, we need to divide the advertising fee by the number of viewers which gives us:
Cost per viewer = Advertising fee / Number of viewers
Substituting the values, we get:
= $165,000 / 16.1 million viewers
= $165,000 / 16,100,000 viewers
= 0.0102484472 per viewer
= $0.01025 per viewer.
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A window is 8 2/3 feet wide and 5 3/4 feet high what is the area of the window
Answers
Answer:
I worked this out & I got a horribly messy number, but if you still want it, here you go.
The answer I got is 49.833333333333333333333333333333, or
49 833333333333333333333333333333/100000000000000000000000000000.
I could not simplify it. Hopefully, your teacher accepts this.
let's firstly convert the mixed fractions to improper fractions, then multiply.
[tex]\stackrel{mixed}{8\frac{2}{3}}\implies \cfrac{8\cdot 3+2}{3}\implies \stackrel{improper}{\cfrac{26}{3}}~\hfill \stackrel{mixed}{5\frac{3}{4}} \implies \cfrac{5\cdot 4+3}{4} \implies \stackrel{improper}{\cfrac{23}{4}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{26}{3}\cdot \cfrac{23}{4}\implies \cfrac{26}{4}\cdot \cfrac{23}{3}\implies \cfrac{13}{2}\cdot \cfrac{23}{3}\implies \cfrac{299}{6}\implies 49\frac{5}{6}~ft^2[/tex]
The skid marks for a car involved in an accident measured 150ft. Use the formula s=24d−−−√ to find the speed s, in feet per second, of the car before the brakes were applied.
Answers
The speed s, in feet per second, of the car before the brakes were applied is,
⇒ s = 67.5 m/s
What is Multiplication?To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.
Given that;
Skid mark for the car = 150 ft
And, given equation of speed and distance is,
⇒ s = √24d
Where, d is the distance
And, s is the speed
Hence, We get;
s = √ 24 × 150
s = √3600
s = 60 m/s
Thus, The speed of the car before it stop is equal to s = 60 m/s
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1. a gallon of water weighs 8 1/3 lbs.
a. what is the weight of 25
gallons of water?
b. If the weight of an empty 25 gallon tank is 1/10 of the water it can hold, what is the weight of the tank?
c. what is the weight of a 25 gallon tank filled with water?
Answers
a. Weight of 25 gallons of water [tex]= (25 \times 25)/(3) = 625/3 lbs[/tex] B. Weight of the empty tank [tex]= (625 \times 1)/(3 \times 10) = 625/30 lbs[/tex] C. Weight of tank filled with water[tex]= 229 5/6 lbs[/tex]
What is the gallon of water?a. The weight of 25 gallons of water can be calculated by multiplying the weight of one gallon of water by 25.
Given:
Weight of 1 gallon of water = 8 1/3 lbs
Calculation:
Weight of 25 gallons of water = (Weight of 1 gallon of water) × 25
[tex]= 8 1/3 lbs \times 25[/tex]
To perform the multiplication, let's convert the mixed number 8 1/3 to an improper fraction:
[tex]8 1/3 = (8 \times 3 + 1)/3 = 25/3[/tex]
Substituting back into the equation:
Weight of 25 gallons of water [tex]= 25/3 \times 25[/tex]
Now, we can multiply the fractions:
Weight of 25 gallons of water [tex]= (25 \times 25)/(3)= 625/3 lbs[/tex]
b. The weight of the empty 25-gallon tank can be calculated as 1/10 of the weight of water it can hold.
Given:
Weight of 25 gallons of water = 625/3 lbs
Calculation:
Weight of the empty tank = (Weight of 25 gallons of water) × (1/10)
[tex]= (625/3 lbs) \times (1/10)[/tex]
We can simplify the fractions:
Weight of the empty tank [tex]= (625 \times 1)/(3 \times 10)[/tex]
[tex]= 625/30 lbs[/tex]
c. The weight of a 25-gallon tank filled with water would be the sum of the weight of the empty tank (calculated in part b) and the weight of 25 gallons of water (calculated in part a).
Given:
Weight of 25 gallons of water = 625/3 lbs
Weight of empty tank = 625/30 lbs
Calculation:
Weight of tank filled with water = Weight of 25 gallons of water + Weight of empty tank
[tex]= 625/3 lbs + 625/30 lbs[/tex]
We can find a common denominator for the fractions and add them:
Weight of tank filled with water [tex]r = (625 \times 10)/(3 \tiimes 10) + (625)/(30)[/tex]
[tex]= (6250/30) + (625/30)= 6875/30 lbs[/tex]
We can simplify the fraction:
Weight of tank filled with water [tex]= 229 5/6 lbs[/tex]
Therefore,a.Weight of 25 gallons of water [tex]= (25 \times 25)/(3) = 625/3 lbs[/tex] B. Weight of the empty tank [tex]= (625 \times 1)/(3 \times 10) = 625/30 lbs[/tex] C. Weight of tank filled with water[tex]= 229 5/6 lbs[/tex]
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a. Weight of 25 gallons of water [tex]= (25 \times 25)/(3) = 625/3 lbs[/tex] B. Weight of the empty tank [tex]= (625 \times 1)/(3 \times 10) = 625/30 lbs[/tex] C. Weight of tank filled with water[tex]= 229 5/6 lbs[/tex]
What is the gallon of water?a. The weight of 25 gallons of water can be calculated by multiplying the weight of one gallon of water by 25.
Given:
Weight of 1 gallon of water = 8 1/3 lbs
Calculation:
Weight of 25 gallons of water = (Weight of 1 gallon of water) × 25
[tex]= 8 1/3 lbs \times 25[/tex]
To perform the multiplication, let's convert the mixed number 8 1/3 to an improper fraction:
[tex]8 1/3 = (8 \times 3 + 1)/3 = 25/3[/tex]
Substituting back into the equation:
Weight of 25 gallons of water [tex]= 25/3 \times 25[/tex]
Now, we can multiply the fractions:
Weight of 25 gallons of water [tex]= (25 \times 25)/(3)= 625/3 lbs[/tex]
b. The weight of the empty 25-gallon tank can be calculated as 1/10 of the weight of water it can hold.
Given:
Weight of 25 gallons of water = 625/3 lbs
Calculation:
Weight of the empty tank = (Weight of 25 gallons of water) × (1/10)
[tex]= (625/3 lbs) \times (1/10)[/tex]
We can simplify the fractions:
Weight of the empty tank [tex]= (625 \times 1)/(3 \times 10)[/tex]
[tex]= 625/30 lbs[/tex]
c. The weight of a 25-gallon tank filled with water would be the sum of the weight of the empty tank (calculated in part b) and the weight of 25 gallons of water (calculated in part a).
Given:
Weight of 25 gallons of water = 625/3 lbs
Weight of empty tank = 625/30 lbs
Calculation:
Weight of tank filled with water = Weight of 25 gallons of water + Weight of empty tank
[tex]= 625/3 lbs + 625/30 lbs[/tex]
We can find a common denominator for the fractions and add them:
Weight of tank filled with water [tex]r = (625 \times 10)/(3 \tiimes 10) + (625)/(30)[/tex]
[tex]= (6250/30) + (625/30)= 6875/30 lbs[/tex]
We can simplify the fraction:
Weight of tank filled with water [tex]= 229 5/6 lbs[/tex]
Therefore,a.Weight of 25 gallons of water [tex]= (25 \times 25)/(3) = 625/3 lbs[/tex] B. Weight of the empty tank [tex]= (625 \times 1)/(3 \times 10) = 625/30 lbs[/tex] C. Weight of tank filled with water[tex]= 229 5/6 lbs[/tex]
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Evaluate the integral by changing to spherical coordinates:
Answers
The value of evaluating the integral expression [tex]\int\limits^a_{-a} \int\limits^{\sqrt{a^2 - y^2}}_{-\sqrt{a^2 - y^2}} \int\limits^{\sqrt{a^2 -x^2 - y^2}}_{-\sqrt{a^2 - x^2 - y^2}} (x^2z + y^2z + z^3) dz dx dy[/tex] is 0
Evaluating the integral using spherical coordinatesGiven that
[tex]\int\limits^a_{-a} \int\limits^{\sqrt{a^2 - y^2}}_{-\sqrt{a^2 - y^2}} \int\limits^{\sqrt{a^2 -x^2 - y^2}}_{-\sqrt{a^2 - x^2 - y^2}} (x^2z + y^2z + z^3) dz dx dy[/tex]
To change to spherical coordinates, we need to express x, y, and z in terms of spherical coordinates: r, θ, and Φ .
In particular, we have
[tex]x &= r \sin\phi \cos\theta, \\y &= r \sin\phi \sin\theta, \\z &= r \cos\phi[/tex]
The Jacobian for the transformation is r² sin(Φ), and the limits of integration become
[tex]-a &\leq x \leq a \quad \Rightarrow \quad 0 \leq r \leq a, \\-\sqrt{a^2 - y^2} &\leq y \leq \sqrt{a^2 - y^2} \quad \Rightarrow \quad 0 \leq \phi \leq \frac{\pi}{2}, \\-\sqrt{a^2 - x^2 - y^2} &\leq z \leq \sqrt{a^2 - x^2 - y^2} \quad \Rightarrow \quad 0 \leq \theta \leq 2\pi.[/tex]
Substituting into the integral, we have
[tex]&\int_{0}^{a} \int_{0}^{\frac{\pi}{2}} \int_{0}^{2\pi} (r^2\sin^2\phi\cos\theta\cdot r\cos\phi + r^2\sin^2\phi\sin\theta\cdot r\cos\phi + r^3\cos^3\phi) r^2 \sin\phi,d\theta d\phi dr \[/tex]
[tex]&\quad = \int_{0}^{a} \int_{0}^{\frac{\pi}{2}} \int_{0}^{2\pi} (r^3\sin^2\phi\cos\theta\cos\phi + r^3\sin^2\phi\sin\theta\cos\phi + r^3\cos^3\phi) \sin\phi, d\theta d\phi dr[/tex]
[tex]&\quad = \int_{0}^{a} \int_{0}^{\frac{\pi}{2}} \int_{0}^{2\pi} r^3\sin\phi\cos\phi (\sin^2\phi\cos\theta + \sin^2\phi\sin\theta + \cos^2\phi) , d\theta d\phi dr \[/tex]
[tex]&\quad = \int_{0}^{a} \int_{0}^{\frac{\pi}{2}} \int_{0}^{2\pi} r^3\sin\phi\cos\phi (\sin^2\phi + \cos^2\phi) , d\theta d\phi dr \[/tex]
[tex]&\quad = \int_{0}^{a} \int_{0}^{\frac{\pi}{2}} \int_{0}^{2\pi} r^3\sin\phi\cos\phi, d\theta d\phi dr \[/tex]
[tex]&\quad = \int_{0}^{a} \int_{0}^{\frac{\pi}{2}} 0, d\theta d\phi dr \&\quad = 0[/tex]
Therefore, the value of the integral is 0.
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(42) Using a waste factor of 6 percent, determine the number of cubic yards of concrete needed to pour the foundation walls shown in Figure 11.4. The footing is 12 foot wide and 1 foot thick.
Answers
The 7.34 cubic yards of concrete needed to pour the foundation walls, which is calculate the volume of the walls and then add the waste factor of 6%.
To find the volume of the concrete needed to pour the foundation walls, we first need to find the total area of the walls. We can do this by breaking it down into three sections
The two 26 ft x 1 ft walls
Area = 2 x (26 ft x 1 ft) = 52 sq ft
The two 42 ft x 1 ft walls
Area = 2 x (42 ft x 1 ft) = 84 sq ft
The 12 in x 15 in x 12 ft wall
First, we need to convert the dimensions to feet:
Length = 12 in ÷ 12 = 1 ft
Breadth = 15 in ÷ 12 = 1.25 ft
Height = 12 ft
Area = (1 ft + 1.25 ft) x 2 x 12 ft = 51 ft²
Total area of the walls = 52 sq ft + 84 sq ft + 51 sq ft = 187 sq ft
Now, we need to add the waste factor of 6% to this to account for any material that may be lost or wasted during the pouring process
Total area with waste factor = 187 sq ft + 6% of 187 sq ft = 198.22 sq ft
Finally, we need to calculate the volume of concrete needed, assuming a thickness of 1 ft
Volume = area x thickness = 198.22 sq ft x 1 ft = 198.22 cubic ft
Since 1 cubic yard is equal to 27 cubic feet, we can convert the volume to cubic yards
Volume in cubic yards = 198.22 cubic ft ÷ 27 = 7.34 cubic yards
Therefore, we need 7.34 cubic yards of concrete to pour the foundation walls with a 6% waste factor.
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Using the graphs below, identify the constant of proportionality
Answers
The constant of proportionality for the graph given can be found to be 2 / 3.
How to find the constant of proportionality ?A fixed numerical quantity that links two variables exhibiting direct proportionality is referred to as the constant of proportionality. This implies that when two factors are directly proportional, a stable ratio exists between them. The same value defines this figure and is identified as the constant of proportionality.
Pick a point on the graph such as ( 3 , 2 ) and ( 6, 4 ), the constant of proportionality would be:
= Change in y / Change in x
= ( 4 - 2) / ( 6 - 3 )
= 2 / 3
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find the work done of a moving particle in the surface center c(0,0,3) of radiu r=5, on the plane z=3 if the force field F = (2x +y_2Z)i + (2x_4y+Z)j (x-2y-Z²) k
Answers
Answer:
75 - 25π.
Step-by-step explanation:
To find the work done by a force field on a particle moving along a curve, we use the line integral of the force field over that curve.
In this case, the curve is a circle of radius 5 centered at (0, 0, 3) lying on the plane z = 3. We can parameterize this curve using polar coordinates as:
r(t) = (5cos(t), 5sin(t), 3), where t goes from 0 to 2π.
The differential of the curve, dr(t), is given by:
dr(t) = (-5sin(t), 5cos(t), 0) dt
Now we need to calculate the work done by the force field F along this curve. The line integral of F over the curve is given by:
W = ∫ F · dr = ∫ (2x +y²Z)dx + (2x-4y+Z)dy + (x-2y-Z²)dz
Substituting x = 5cos(t), y = 5sin(t), and z = 3, we get:
W = ∫ (10cos(t) + 25sin²(t)·3) (-5sin(t))dt
∫ (10cos(t) - 20sin(t) + 3) (5cos(t))dt
∫ (5cos(t) - 10sin(t) - 9) (0)dt
Simplifying, we get:
W = -75∫sin(t)cos(t)dt + 50∫cos²(t)dt + 0
Using the trigonometric identities sin(2t) = 2sin(t)cos(t) and cos²(t) = (1 + cos(2t))/2, we can simplify this further:
W = -75∫(1/2)sin(2t)dt + 25∫(1 + cos(2t))dt
= -75·(1/2)·(-cos(2t))∣₀^(2π) + 25·(t + (1/2)sin(2t))∣₀^(2π)
= 75 - 25π
Therefore, the work done by the force field F on the particle moving along the circle of radius 5 centered at (0, 0, 3) lying on the plane z = 3 is 75 - 25π.
What shapes can be a cross section of a rectangular prism
Answers
The shape that would be seen if you were to take a cross-section parallel to the base of a rectangular prism is a RECTANGLE.
Here, we have,
we know that,
A regular prism is a base with a regular polygon, whereas a prism whose base is an irregular polygon is called an irregular prism.
so, we have,
This is because the cross-section of a rectangular prism will always be a rectangle.
The definition of a prism is that the cross-section parallel to the base will be uniform.
Hence, The shape that would be seen if you were to take a cross-section parallel to the base of a rectangular prism is a RECTANGLE.
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Find what the value of x is please
The choices are...
1. 118
2. 108
3. 28
4. 58
Answers
Answer:
choice 1
Step-by-step explanation:
62 and x are a linear pair and sum to 180 , that is
62 + x = 180 ( subtract 62 from both sides )
x = 118
Answer:
1. 118
Step-by-step explanation:
Given the image provided:
Supplementary angles are where the two angles add up to 180°A straight line is equal to 180°Solve for x:
Since, the image is of a supplementary angle that adds up to 180° and one angle is 62°, then we take 180 minus 62.
180 - 62 = 118Answer:
Therefore, x = 118 and the answer is 1.
To find the height of a pole, Elka lays a mirror on the level ground 20 feet from the base of the pole. She moves back away from the mirror until she can exactly see the top of the pole. If she backed way 5.5 feet and her eyes are 5 feet above the ground, how tall is the flag pole?
Answers
The height of the pole is 18.18 feet
Given data ,
Elka uses similar triangles to find the height of the pole. The situation forms two similar right triangles: one with the pole and the mirror, and another with Elka's eyes and the mirror.
Let's denote the height of the pole as "h" feet.
Distance from the base of the pole to the mirror = 20 feet
Distance Elka moves back away from the mirror = 5.5 feet
Height of Elka's eyes above the ground = 5 feet
Using the concept of similar triangles, we can set up the following proportion:
h / 20 = 5 / 5.5
Multiply by 20 on both sides , we get
h = 100 / 5.5
h = 18.18 feet
Hence , the height of the flagpole is approximately 18.18 feet
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Help me please this is getting tricky!
Answers
1. The difference between the longest and shortest pencil is 4 5/12
2. The total length is 22 3/4 inches
3. The statement is false
4. There are 9 pencils that measure more than 5½ inches and less than 7 2/4 inches
What is word problem?A word problem is a math problem written out as a short story or scenario. This statements are interpreted into mathematical equation or expression.
1. The difference between longest and shortest pencil = 8⅔ - 4¼
= 26/3 - 17/4
= (104-51)/12
= 53/12 = 4 5/12
2. The total length of pencils less than 5 ½ inches = 5×2 + 17/4 × 3
= 10+ 51/4 = 40+51)/4
= 91/4 = 22 3/4 inches
3. The Statement is false because the pencils less than 6 inches is 8 and not upto half of the total pencil
4. There are 9 pencils that measure more than 5½ inches and less than 7 2/4 inches.
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Invent examples of data with
(a) SS(between) = 0 and SS(within) > 0
(b) SS(between) > 0 and SS(within) = 0
For each example, use three samples, each of size 5.
Answers
The sample of given data is Sample 1: 1, 2, 3, 4, 5 Sample 2: 6, 7, 8, 9, 10
b)Sample 1: 1, 2, 3, 4, 5 Sample 2: 6, 7, 8, 9, 10
(a) An example of data with SS(between) = 0 and SS(within) > 0 could be the following:
Sample 1: 1, 2, 3, 4, 5
Sample 2: 6, 7, 8, 9, 10
Sample 3: 11, 12, 13, 14, 15
In this example, the means of each sample are all different from each other, but the grand mean (8) is equal to the mean of each sample. Therefore, there is no variability between the means of the samples, resulting in SS(between) = 0. However, there is still variability within each sample, resulting in SS(within) > 0.
(b) An example of data with SS(between) > 0 and SS(within) = 0 could be the following:
Sample 1: 1, 2, 3, 4, 5
Sample 2: 6, 7, 8, 9, 10
Sample 3: 11, 12, 13, 14, 15
In this example, the means of each sample are all the same (8), but the values within each sample are all different from each other. Therefore, there is variability between the means of the samples, resulting in SS(between) > 0. However, there is no variability within each sample, resulting in SS(within) = 0.
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A standard deck of 52 cards has 4 suits: clubs, spades, hearts, and diamonds. Each suit has number cards 2 through 10, a jack, a queen, a king, and an ace. The jack, queen, and king are considered "face cards".
What is the probability of drawing one card from a standard deck of cards and choosing a "face card"?
A. 1/3
B. 3/52
C. 1/4
D. 3/13
Answers
The probability of drawing one card from a standard deck of cards and choosing a "face card" is 3/13.
What is probability?
Probability is a measure of the likelihood or chance of an event occurring, expressed as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty.
There are a total of 12 face cards in a standard deck of 52 cards (4 jacks, 4 queens, and 4 kings).
The probability of drawing a face card can be calculated by dividing the number of face cards by the total number of cards in the deck:
P(face card) = number of face cards / total number of cards
[tex]P(face \: card) = \frac{12}{52} \\ P(face \: card) = \frac{3}{13} [/tex]
Therefore, the probability is D. 3/13.
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Sam records how long it takes his classmates to complete a quiz.
The times are shown below in minutes.
13, 16, 8, 9, 12, 14, 20, 36, 11, 513,16,8,9,12,14,20,36,11,5
He thinks that the average time taken to complete the quiz is 1212 minutes.
What is the difference between actual mean time taken to complete the quiz and the time Sam says?
Answers
The difference between the actual mean time taken to complete the quiz and the time Sam says is -0.2 minutes.
What is mean?The mean, also known as the average, is a measure of central tendency that represents the sum of all values in a data set divided by the number of data points.
Mathematically, the mean is defined as:
Mean = (Sum of all values) / (Number of data points)
According to the given information:
To find the difference between the actual mean time taken to complete the quiz and the time Sam says, we can follow these steps:
Find the actual mean time taken to complete the quiz:
Add up all the given times: 13 + 16 + 8 + 9 + 12 + 14 + 20 + 36 + 11 + 5 + 13 + 16 + 8 + 9 + 12 + 14 + 20 + 36 + 11 + 5 = 236
Divide the sum by the number of data points (20, since there are 20 quiz times): 236 / 20 = 11.8 minutes
Calculate the difference between the actual mean time and the time Sam says:
Actual mean time taken to complete the quiz: 11.8 minutes
Time Sam says: 12 minutes
Difference = Actual mean time - Time Sam says = 11.8 - 12 = -0.2 minutes
So, the difference between the actual mean time taken to complete the quiz and the time Sam says is -0.2 minutes, indicating that Sam's estimate is 0.2 minutes (or 12 seconds) higher than the actual mean time.
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Comparing Rates of Change Station Cards
(y=mx+b form)
Write a function rule that has a rate of change greater than the function
that passes through the points given in the table.
-2
-1
0
1
2
7
1
-2
-5
Answers
Answer: y = -4x + 1. Brainliest?
Step-by-step explanation:
To write a function rule that has a greater rate of change than the given function, we need to find the slope of the given function. We can use the two points (-2, 7) and (2, -5) from the table to calculate the slope as:
slope = (change in y) / (change in x) = (-5 - 7) / (2 - (-2)) = -3
So the slope of the given function is -3. To create a new function rule with a greater rate of change, we can choose a larger slope. Let's choose a slope of -4. We also need to find the y-intercept (b) of the new function, which we can do by plugging in one of the points from the table and solving for b. Let's use the point (0, 1):
y = mx + b
1 = (-4)(0) + b
b = 1
So the function rule with a greater rate of change and passing through the point (0, 1) is:
y = -4x + 1