The cost of each drink is $5.5
The cost of each candy is $5
What is elimination method ?Using the elimination method, you may either add or subtract the equations to produce an equation in one variable. To eliminate a variable, add the equations when the coefficients of one variable are in opposition, and subtract the equations when the coefficients of one variable are in equality.
According to the given information
Let number of drinks = x
Let number of candies = y
Christian bought 8 drinks and 10 candies and it costed $94
So the equation becomes
8x + 10 y = $94
Other guy bought 9 drinks and 6 candies and it costed $79.50
So the equation becomes
9x + 6y = $79.50
By applying elimination method
9x + 6y = $79.50
Dividing by 2
3x + 2y = $26.5
multiplying the above equation by 5
15x + 10y = $132.5
8x + 10 y = $94
Subtract the following equation
7x = 38.5
x = 5.5
substituting the value of x in above one equation we get
y = 5
So the cost of each drink is $5.5
the cost of each candy is $5
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Answer:
D = the price of each drink
C = The price of each candy
One drink costs d. So 8 drinks cost 8d. Same thing with candies except a different variable. One candy costs c. Therefore 10 candies cost 10c. So the first equation here would be :
8d + 10c = 94
Same thing with the second equation but with different numbers :
9d + 6c = 79.50
If you're also looking for a solution to this answer. You use a process called the elimination method.
Let me know if you have any questions ! <3
How to do this question?
The solution set for absolute value inequalities are presented as follows;
(b) (i) -∞ < x ≤ 2
(ii) 1.25 ≤ x < 3, or x > 3
What is an absolute value inequality?An absolute value inequality is an inequality with an absolute value expression containing a variable.
(i) |2·x + 7| + 1 ≥ 6·x
Solving for when |2·x + 7| is positive, we get;
2·x + 7 + 1 ≥ 6·x
7 + 1 ≥ 6·x - 2·x = 4·x
8 ≥ 4·x
Dividing both sides by 4, we get;
8 ÷ 4 ≥ 4·x ÷ 4 = x
2 ≥ x
Therefore; x ≤ 2
The solution of the absolute value inequality can be found as follows;
|2·x + 7| + 1 ≥ 6·x
|2·x + 7| ≥ 6·x - 1
Therefore, we have the following compound inequality;
2·x + 7 ≤ -(6·x - 1), 2·x + 7 ≥ (6·x - 1)
The solution for the inequality, 2·x + 7 ≤ -(6·x - 1) is found as follows;
2·x + 7 ≤ -(6·x - 1) = 1 - 6·x
2·x + 6·x ≤ 1 - 7 = 6
8·x ≤ 6
x ≤ 6/8 = 3/4
x ≤ 3/4
The solution for the inequality, 2·x + 7 ≥ (6·x - 1) is found as follows;
2·x + 7 ≥ (6·x - 1)
7 + 1 ≥ 6·x - 2·x = 4·x
8 ≥ 4·x
x ≤ 2
Combining the solution, we get;
-∞ < x ≤ 2
(ii) [tex]\left|\dfrac{2\cdot x+ 1}{x - 3} \right| \geq 2[/tex]
Therefore, we get;
[tex]\dfrac{2\cdot x+ 1}{x - 3} \leq -2[/tex]
[tex]\dfrac{2\cdot x+ 1}{x - 3} + 2 \leq 0[/tex]
[tex]\dfrac{4\cdot x - 5}{x - 3} \leq 0[/tex]
x < 3, or x ≥ 1.25
1.25 ≤ x < 3
[tex]\dfrac{2\cdot x+ 1}{x - 3} \geq 2[/tex]
[tex]\dfrac{2\cdot x+ 1}{x - 3} -2 \geq 0[/tex]
[tex]\dfrac{7}{x - 3} \geq 0[/tex]
Therefore, x > 3,
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Triangle ABC is similar to triangle A’B’C’. Find the value of x.
Answer:
x = 64
Step-by-step explanation:
63. 28
---- = ----
144. x
Now cross multiply:
144(28) = 63(x)
4,032 = 63x
x = 64
May I have a brainliest? Thank you!
PLEASE HELP ME WITH THIS QUESTION
a) Corresponding angles are congruent, m<a=139
b) Alternate Interior Angles are congruent, m<b =139
Suppose the following information was collected, where x=diameter of tree trunk in inches, and y=tree height in feet
x 4 2 8 6 10 6
y 8 4 18 22 30 8
If the LSRL equation is y=-3.6 + 3.1x, what is your estimate of the average height of all trees having a trunk diameter of 7 inches?
A) 18.1
B) 19.1
C) 20.1
D) 21.2
E) 22.1
The estimate of the average height of all the trees having a trunk diameter of 7 inches is y = 18.1 feet. This is obtained by using the LSRL equation. Option A is the correct value.
What is the LSRL equation?The LSRL equation is defined as the Least squares regression line. This is the line that minimizes the variance. So, it is the best line of fit for a set of data points.
The equation is in the form of Y = a + bX
Here a is the intercept and b is the slope.
Calculation:It is given that,
X is given as the diameter of a tree trunk in inches
Y is given as the tree height in feet
The given data points are:
X: 4, 2, 8, 6, 10, 6
Y: 8, 4, 18, 22, 30, 8
For these data points, the least squares regression line is given by the equation Y = - 3.6 + 3.1X
So, the estimate of the average height of all trees having a trunk diameter of 7 inches is
Y = - 3.6 + 3.1X ⇒ Y = -3.6 + 3.1 × 7
⇒ Y = -3.6 + 21.7
∴ Y = 18.1 feet
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Determine the equation for the line. Write the equation in standard form through
the points
(3,-4) and (6,-2)
The standard form equation for the line through the points (3,-4) and (6,-2) is -2/3 x + y = 4.
What is the equation of the line passing through the two-point?
To find the equation for the line through two points we can use the formula:
y - y1 = m(x - x1)
where (x1, y1) is one of the points, and m is the slope of the line. The slope of the line is equal to the change in y over the change in x, which can be calculated as:
m = (y2 - y1) / (x2 - x1)
where (x2, y2) is the other point.
Substituting the given points and the formula for the slope into the formula for the equation of the line, we get:
y - (-4) = ((-2) - (-4)) / (6 - 3) (x - 3)
This simplifies to:
y + 4 = -2/3 (x - 3)
To write the equation in standard form, we can distribute the -2/3 and then rearrange the terms:
-2/3 x + y = 4
Hence, the standard form equation for the line through the points (3,-4) and (6,-2) is -2/3 x + y = 4
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Graph and label the following points on the coordinate grid below: A) (4,2) B) (-3, -1) C) (2,-3) D) (-6,5)
The points on the coordinate grid are been labelled in the image attached with solution.
What is coordinate?A pair of integers that use the horizontal and vertical separations from the two reference axes to define a point's location on a coordinate plane. typically expressed by the x-value and y-value pair (x,y). You do the reverse to determine a point's coordinates in a coordinate system. Start at the point, then move up or down a vertical line until you reach the x-axis. Your x-coordinate is shown there. To get the y-coordinate, repeat the previous step while adhering to a horizontal line. The terms abscissa and ordinate are used to describe the x- and y-coordinates, respectively. A point in a plane is represented by both coordinates (x, y).
Here,
The picture showing the answer is labeled with the coordinate grid's points.
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A political candidate has asked you to conduct a poll to determine what percentage of people support her.
If the candidate only wants a 5% margin of error at a 95% confidence level, what size of sample is needed?
Give your answer in whole people.
The incumbent is the current holder of an office or position, usually in relation to an election.
Who is a political candidate?In the context of elections for public office in a representational partisan democracy, a candidate who has been selected by a political party is normally said to be the nominee of that party.Today, in 48 states, individuals participate in primaries or caucuses to elect delegates who support their presidential candidate of choice. At national party conventions, the presidential contender with the most state delegate votes wins the party nomination.This usually happens through the party's state primaries and caucuses. State delegates go to the national convention to vote to confirm their choice of candidates. But if no candidate gets the majority of a party's delegates during the primaries and caucuses, convention delegates choose the nominee.In most states, state offices include: Governor, Lieutenant Governor, Secretary of State, and Attorney General, State Supreme Court Justices, Comptroller, Treasurer, State Senators, and State Legislators.
The variable of interest is:
X: Number of people that support the candidate.
You need to calculate the sample size to estimate the population proportion of supporters given a confidence level of 99% and a margin of error of 4%
The margin of error of the confidence level for the population proportion is
d = [tex]Z_{1} - \frac{\alpha }{2} * \sqrt{\frac{p^{|}(1 - p^{|} ) }{n} }[/tex]
=[tex]\frac{d}{Z_{1}-\alpha /2 } =\sqrt{\frac{p^{2}(1-p^{2} ) }{n} }[/tex]
sample proportion "p'" since there is no sample information, nor any previous information is known, you have to consider it as the "worse case scenario" and use the value of p'= 0.50
d= 0.04
She has to take a sample of 1045 people to estimate the population proportion of her supporters with a confidence level of 99% and a margin of error of 4%
=[tex]0.5*0.5*(\frac{2.586}{0.04} } )^{2} =1044.9=1045[/tex]
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answer qauetion pls
its in the picture
Answer: 6
Step-by-step explanation:
Reduce the expression, if possible, by cancelling the common factors.
Input the numbers that you are given.
|(2)(7)|−(−4) / 3 (Input the numbers)
=|14|−(−4) / 3 (Multiply your numbers, then you get 14.
=14−(−4) / 3 (find the absolute value (always will be positive) )
=18/3 (Change the fraction into a whole number)
=6
Complete a proof to solve. Given: IJKL is a parallelogram, ∠1 ≅ ∠2. Prove: IJKL is a rectangle
A rectangle is one of the types of four sided figures generally refers to as quadrilaterals. The required proof is as stated below:
Rectangles, Parallelograms, square, trapezium, kite and rhombus are a family of quadrilaterals, since they all have four straight sides. Each of these figures have individual properties that can be used to differentiate one from the other.
Some peculiar properties that can be used to identify a rectangle are:
the opposite sides have equal lengthit has two equal diagonalsadjacent sides are at an angle of [tex]90^{o}[/tex] to each otherTherefore to prove that IJKL is a rectangle;
<1 ≅ <2 (Given)
IL ≅ JK (opposite sides are equal)
IJ ≅ LK (opposite sides are equal)
IK ≅ JL (diagonals have equal length)
M is the midpoint of IK and JL respectively.
<JIK ≅ <IKL (alternate angles property)
<IJL ≅ <KLJ (alternate angles property)
IL ⊥ IJ
IJ ⊥ JK
JK ⊥ LK
LK ⊥ LI
Therefore, the given figure is a rectangle.
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14) Huong had $23 to spend on two pens. after buying them she had $15. How much did each pen cost
Answer:
Step-by-step explanation:
23-15=8 (pour savoir combien elle a dépenser en tout)
8 diviser par 2= 4 (pour savoir le prix d'un stylo)
chaque stylo vaut 4 $
An ordinary regression (or ANOVA) model that treats the response Y as normally distributed is a special case of a GLM, with normal random component and identity link function. True/False
True. An ordinary regression (or ANOVA) model that treats the response Y as normally distributed is a special case of a GLM, with a normal random component and identity link function.
A flexible framework for modeling the relationship between a response variable Y and one or more predictor variables X is called a generalized linear model (GLM).
A GLM model allows for the use of non-identity link functions as well as for the response variable to have a distribution other than the normal distribution.
If we consider an ordinary regression model or an analysis of variance (ANOVA) model that assumes a normal distribution of response variable Y, this can be considered a special case of a GLM, with the normal distribution as the random component and the identity link function.
Here, the variance of the response is assumed to be constant, and the mean of the response variable is assumed to be a linear function of the predictor variables.
Let
Y ~ N(μ,σ²)
μ = β₀ +β₁X₁ + β₂X₂ + ... + βₙXₙ
In this case, a normal distribution, with mean μ and variance σ² id followed by response variable Y.
here we can see that the mean μ is a linear function of the predictor variables X₁, X₂, ..., Xₙ, with coefficients β₀, β₁, β₂, ...,βₙ.
The identity link function, that is, that μ is equal to the predicted value of Y is used.
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Answer Questions 9 to 11 using the lines shown in the coordinate grid below.
Question# 5, Is it true that m is parallel to n? Your response should be at least 3 complete sentences. Be sure to include any relevant measurements and angels and calculations for all questions.
Question# 6, Is it true that m is congruent to p?
Question#7 Is it true that n congruent to p?
Answer:
Step-by-step explanation:
Find the equation of lines m, n and p
The equation of line:
[tex]\boxed {\frac{x-x_1}{x_2-x_1}=\frac{y-y_1}{y_2-y_1} }[/tex]
Line m: (-3,2) (3,6)
x₁=-3 x₂=3 y₁=2 y₂=6
[tex]\displaystyle\\\frac{x-(-3)}{3-(-3)} =\frac{y-2}{6-2} \\\\\frac{x+3}{3+3} =\frac{y-2}{4} \\\\\frac{x+3}{6}=\frac{y-2}{4}[/tex]
Multiply both parts of the equation by 4:
[tex]\displaystyle\\\frac{x+3}{6}(4)=y-2\\\\\frac{2}{3} (x+3)=y-2\\\\\frac{2}{3}x+2=y-2\\\\\frac{2}{3}x+2+2=y-2+2\\\\\frac{2}{3}x+4=y\\\\Thus,\ y=\frac{2}{3} x+4\\\\Hence,\ m_m=\frac{2}{3}[/tex]
Line n: (-5,-5) (5,1)
x₁=-5 x₂=5 y₁=-5 y₂=1
[tex]\displaystyle\\\frac{x-(-5)}{5-(-5)}=\frac{y-(-5)}{1-(-5)} \\\\\frac{x+5}{5+5}=\frac{y+5}{1+5} \\\\\frac{x+6}{10}=\frac{y+5}{6}[/tex]
Multiply both parts of the equation by 6:
[tex]\displaystyle\\\frac{3}{5}( x+5)=y+5\\\\\frac{3}{5} x+3 =y+5\\\\\frac{3}{5} x+3-5=y+5-5\\\\\frac{3}{5} x-2=y\\\\Thus,\ y=\frac{3}{5}x-2\\\\Hence,\ m_n=\frac{3}{5}[/tex]
Line p: (3,-4) (-3,6)
x₁=3 x₂=-3 y₁=-4 y₂=6
[tex]\displaystyle\\\frac{x-3}{-3-3} =\frac{y-6}{6-(-4)} \\\\\frac{x-3}{-6} =\frac{y-6}{6+4} \\\\\frac{x-3}{-6}=\frac{y-6}{10} \\[/tex]
Multiply both parts of the equation by 10:
[tex]\displaystyle\\-\frac{5}{3} x+5=y-6\\\\-\frac{5}{3} x+5+6=y-6+6\\\\-\frac{5}{3} x+11=y\\Thus,\ y=-\frac{5}{3}x+11 \\\\Hence,\ m_p=-\frac{5}{3}[/tex]
[tex]Question# 5: \ m_m\neq m_n\ \ \ \ m\ isn't\ parallel \ to\ n\\\\Question# 6:\ m\ isn't \ congruent \ to\ p\\\\Question#7 :\ n\ isn't \ congruent \ to\ p[/tex]
[tex]n \bot p[/tex]
Answer:
5) No the lines are not parallel because in order for this to be true, the slopes have to be equal. Line m has a slope of 2/3 and line n has a slope of 3/5. Both slopes are not equal so it is not parallel
6) No, m is not congruent to p
7) No, n is not congruent to p
(Is there any chance that you meant to say perpendicular instead of "congruent"?)
Step-by-step explanation:
For two lines to be parallel the slopes have to be equal
See attached to see the rise over run
line m: 2/3
line n: 3/5
The slopes are not equal so the lines are not parallel.
Y=k√x and y=7 and x=9. What is the value of y when x=36
Answer:
y = 14
Step-by-step explanation:
y = k[tex]\sqrt{x}[/tex] Solve for k
7 = k[tex]\sqrt{9}[/tex]
7 = k3 Divide both sides by 3 to solve for k
[tex]\frac{7}{3}[/tex] = k
y = kx
y = [tex]\sqr\frac{7}{3} }[/tex][tex]\sqrt{36}[/tex]
y = [tex]\frac{7}{3}[/tex](6)
y = 14
[tex]\frac{7}{3}[/tex][tex](\frac{6}{1})[/tex] is the same thing as [tex]\frac{7}{1}[/tex][tex](\frac{2}{1})[/tex] I cross canceled the 3 and the 6
[tex]\frac{14}{1}[/tex] = 14
help meeeeeeeeeeeeeeeeeeeeeeeeeee pleaseeeeeeeeeeeeeeeeeeeeee!!!!!
Answer:
11.6 years
Step-by-step explanation:
Given
[tex]A=P(1+\frac{r}{n} )^{nt}[/tex]
we can solve for [tex]t[/tex]
[tex]t=\frac{ln(\frac{A}{P} )}{n*ln(1+\frac{r}{n}) }[/tex]
We are given
[tex]A=1800\\P=900\\r=0.06\\n=12[/tex]
We can evaluate [tex]t[/tex].
[tex]t=\frac{ln(\frac{1800}{2} )}{12*ln(1+\frac{0.06}{12}) }[/tex]
[tex]t=11.6[/tex]
Savannah buys a $40 gift card to her favorite smoothie shop. Each smoothie costs $4. She wants to have at least $10 left on her card at the end of this month. The inequality below relates x, the number of smoothies she could buy between now and the end of this month with her gift card balance.
40 minus 4 x greater-than-or-equal-to 10
The choice that best describes the number of smoothies that Savannah could buy between now and the end of this month with her gift card balance is "She can buy from 0 to 7 smoothies, but no more."
How to find the number of smoothies that Savanna can buy?
Given : 40 - 4x > 10 which is an inequality
To find : The value of x
Procedure:
Step 1: Collect all the terms with x on right side and the constant terms on the left side of the greater sign.
40 - 4x > 10
When 10 is brought to the left, there will be change in sign for the number 10 and similarly, when -4x is taken to the right, it becomes +4x or simply 4x. So inequality becomes
40 - 10 > 4x
Step 2: On solving the resulting inequality, we get
30 > 4x
Divide both sides by 4. So inequality becomes
[tex]\frac{30}{4} > \frac{4x}{4}[/tex]
7.5 > x
This means, x < 7.5
The choice that best describes the number of smoothies that Savannah could buy between now and the end of this month with her gift card balance is "She can buy from 0 to 7 smoothies, but no more."
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Answer:She can buy from 0 to 7 smoothies, but no more."
Step-by-step explanation:She can buy from 0 to 7 smoothies, but no more." Which is option B
6x – 16 = 20 pls i need help i dont understand
Answer:
x=6
Step-by-step explanation:
6x-16=20
Add 16 to both sides
6x-16=20
+16. +16
6x=36
Divide 6 to both sides
6x=36
/6. /6
x=6
Hopes this helps please mark brainliest
Answer:
x = 6
Step-by-step explanation:
Given equation,
→ 6x - 16 = 20
Now the value of x will be,
→ 6x - 16 = 20
→ 6x = 20 + 16
→ 6x = 36
→ x = 36/6
→ [ x = 6 ]
Hence, the value of x is 6.
13 1/3 divided by 2/3
The value of expression 13 1/3 divided by 2/3 would be; 20
How can we interpret the division?When 'a' is divided by 'b', then the result we get from the division is the part of 'a' that each one of 'b' items will get. Division can be interpreted as equally dividing the number that is being divided into total x parts, where x is the number of parts the given number is divided.
We need to find the expression of 13 1/3 divided by 2/3
Therefore,
40/3 divided by 2/3
40/3 x 3/2
20
Therefore, The value of expression 13 1/3 divided by 2/3 would be; 20
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Find the equation of the line.
Use exact numbers.
y= x+
Answer:
y = -2x + 5
Step-by-step explanation:
To find the slope use rise over run
To find the y-intercept see where the line intersects in the y-axis line
The formula A=23.1 е⁰⁰¹⁵²⁺ models the pollution of US state, a, in millions ,t years after 2000.
A. What was the population of the state in 2000 ?
b. When will the population of the state reach 28.3 million?
a. In 2000 , the population of the state was ____million.
In 2000, the population of the state was 23.1 million and the population of the state reach 28.3 million in 2013
How to determine the population of the state in 2000?From the question, we have the following parameters that can be used in our computation:
A=23.1 е⁰⁰¹⁵²⁺
Also from the question, we have
The variable t represents the number of years after 2000.
This means that
t = Current year - 2000
Substitute the known values in the above equation, so, we have the following representation
t = 2000 - 2000
Evaluate
t = 0
So, we have
A=23.1 е⁰⁰¹⁵² ˣ ⁰
Evaluate the above equation
A = 23.1
When the population reaches 28.3 millionHere, we have
A = 28.3
Substitute the known values in the above equation, so, we have the following representation
23.1 е⁰⁰¹⁵²⁺ = 28.3
Divide both sides by 23.1
е⁰⁰¹⁵²⁺ = 1.22510822511
Take the natural logarithm of both sides
0.0152t = 0.203
So, we have
t = 0.203/0.0152
Evaluate
t = 13
So, the year is
Year = 2000 + 13
Year = 2013
This means that the population of the state reach 28.3 million in 2013
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Determine the value for x in the equation x over 6 and 4 tenths equals 3 and 6 tenths.
23.04
19.2<-- this is not correct
10.0
2.8
The value of variable x is 19.20.
How to solve equations ?Let's find the value of variable x in the equation.
A variable is a number represented with letters in an equation.
Therefore,
x / 6 + 4 / 10 = 3 + 6 / 10
Therefore, let's find the variable x.
10x + 24 / 60 = 30 + 6 / 10
10x + 24 / 60 = 36 / 10
60 × 36 = 10(10x + 24)
2160 = 100x + 240
2160 - 240 = 100x
1920 = 100x
divide both sides by 100
x = 1920 / 100
x = 19.20
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Answer: its A 23.04
Step-by-step explanation:
In chemistry, the pH of a solution is a measure of the acidity or alkalinity of a solution. Water has a pH of 7 and, in general, acids have a pH less than 7 and alkaline solutions have a pH greater than 7. Find the pH of a solution with a hydronium ion concentration of 7.7×10−9 moles/liter. Round your answer to two decimal places, if necessary.
The answer to this Question based on pH is 8.12
What is pH?
pH is a measure of acidity or basicity in a solution. It is measured on a scale ranging from 0 to 14, with 7 being neutral. A pH below 7 is acidic and a pH above 7 is basic. A solution with a pH of 0 is the most acidic, while a solution with a pH of 14 is the most basic. The pH of a solution is an important factor in many chemical and biological processes, as it affects the activity of molecules. For example, enzymes typically only function within a certain pH range, and most biological cells have a preference for a specific pH. pH is also important in determining the solubility of certain substances, and can affect the taste of food.
Here [H] = 7.7 * 10^-9
pH = -log[7.7 * 10^-9]
using some log properties this value comes out to be
pH = 9 - 0.88
pH = 8.12 and pH greater than 7 means solution is Basic
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Solve the following absolute value equation.
4|x + 6 = 24
x = [?]
= -0
X =
Enter
x = 12, using the concept of absolute value equation.
What is absolute value equation?The non-negative value of a real number x, regardless of its sign, is its absolute value (or modulus), | x |. For instance, 5 has an absolute value of 5, and 5 has a value of 5. One way to think about a number's absolute value is as its distance from zero on the real number line.
To answer an absolute value problem, isolate the absolute value on one side of the equation. Then, resolve both equations by setting their respective contents to the positive and negative values of the integer on the other side of the equation.
Given that,
4|x+6| = 24
either |x+6| = 6 or, |x+6| = -6
x = 0. -12
So, x = 12 [here as negative sign is already present]
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A square swimming pool is surrounded by a cement sidewalk that is 3 feet wide. Enter two different functions representations for the total area that the swimming pool and sidewalk enclosed, A(x), if the length of the pool is x feet long
HELPPPP ME PLSSS
Answer:its 30 ft
Step-by-step explanation:
easyyy
11. The equation 4 y=3 x+6 represents a line. What are the slopes of lines that are parallel and perpendicular to the given line? Drag the correct numbers into the boxes to complete the sentence.
Lines parallel to the given equation will have a slope of Drop Area , and lines perpendicular to the given equation will have a slope of Drop Area.
Slope of Parallel line is 3/4
Slope of Perpendicular line is -4/3
What is Slope of Line?
The slope of a line indicates its steepness. Slope is computed mathematically as "rise over run" (change in y divided by change in x).
Solution:
General Form of Line: y = mx + c
here, m is the slope
4y = 3x + 6
y = 3/4x + 3/2
Parallel Line have the same Slope = 3/4
Perpendicular Line:
Product of Slope = -1
Slope of Perpendicualr Line = -4/3
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Which set of ordered pairs represents a linear function?
A. ((-5, -3), (-3, 5), (1, 1)}
B. ((-5, 3), (3, 0), (1,5)}
C. {(-5, 3), (3, 1), (1, 1)}
D. ((-5, -3), (-5, -1), (-5, 1)}
Answer:
C
Step-by-step explanation:
Linear Function- points on a graph that make up a straight line negative or positive.
Only Values of (C) makes a perfect line.
Home Depot sells boards in 3 meter lengths. How much board is left if you only need 1 meter and 45 cm?
If you only need 1 meter and 45 cm. Then the length of the board left will be 1.55 meters.
What is Algebra?Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.
Conversion means converting the same thing into different units.
Home Depot sells boards in 3-meter lengths. If you only need 1 meter and 45 cm. Then the length that you need is calculated as,
⇒ 1 meter and 45 centimeters
Convert the centimeters into a meter. Then we have
⇒ 1 + 45 / 100
⇒ 1 + 0.45
⇒ 1.45
Then the length of the board left will be calculated as,
⇒ 3 - 1.45
⇒ 1.55 meters
If you only need 1 meter and 45 cm. Then the length of the board left will be 1.55 meters.
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3. Suppose I have a magnetic six-sided die which makes it not a fair die. I roll the die 500
times and find that I get a “6” 100 times.
a) For this die, what is my best estimate of the probability of rolling a “6”?
b) If I roll this die 30 times, how many “6”s do I expect to get?
c) If I roll a fair die 30 times instead of this “unfair” die, how many “6”s do I expect to get?
a) The best estimate of the probability of rolling a "6" with this die is
0.2 (100/500).
My best estimate of the probability of rolling a “6” is 20%. This is calculated by taking the number of “6”s rolled in the 500 trials (100) and dividing it by the total number of trials (500).
b) If you roll this die 30 times, you can expect to get 6 "6"s (0.2 x 30).
If I roll this die 30 times, I expect to get 6 “6”s. This is calculated by taking the probability of rolling a “6” (20%) and multiplying it by the number of trials (30).
c) If you roll a fair die 30 times, you can expect to get 5 "6"s (1/6 x 30).
If I roll a fair die 30 times instead of the “unfair” die, I expect to get 5 “6”s. This is calculated by taking the probability of rolling a “6” on a fair die (16.7%) and multiplying it by the number of trials (30).
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A particle moves so that position in meters is given as a function of time in seconds by the equation x(t)=Acos(wt+l), where A=0.0395 m, w=346 s−1, and l=1.00. Give numerical values for the following:
What is the position of the particle at =3.00 ms?
What is the velocity of the particle at =3.00 ms?
What is the acceleration of the particle at =3.00 ms?
0.0395 m, -0.486 ms⁻¹ and -4725.791 ms⁻² are the position, velocity and acceleration of the particle are respectively
How to determine the position of the particle at 3.00 ms?
Given that:
A particle moves so that position in meters is given as a function of time in seconds by the equation x(t)=Acos(wt+l), where A=0.0395 m, w=346 s⁻¹, and l=1.00
The position of the particle at 3.00 ms
Substitute t = 3.00 ms = 0.003 s into the function:
x(t) = Acos(wt+l)
x(0.003) = 0.0395cos(346×0.003 + 1.00)
x(0.003) = 0.0395cos(2.039)
x(0.003) = 0.0395 m
The velocity of the particle at 3.00 ms
To get the velocity function, take the derivative of x(t) = Acos(wt+l):
x'(t) = -Awsin(wt+l)
Then substitute t = 3.00 ms = 0.003 s into the velocity function:
x'(t) = -Awsin(wt+l)
x'(0.003) = -0.0395 ×346sin(346×0.003 + 1.00)
x'(0.003) = -13.667sin(2.038)
x'(0.003) = -0.486 ms⁻¹
The acceleration of the particle at 3.00 ms
To get the acceleration function, take the derivative of x'(t) = -Awsin(wt+l):
x''(t) = -Aw²cos(wt+l)
Then substitute t = 3.00 ms = 0.003 s into the function:
x''(t) = -Aw²cos(wt+l)
x''(0.003) = -0.0395 ×346² cos(346×0.003 + 1.00)
x''(0.003) = -4728.782 cos(2.038)
x''(0.003) = -4725.791 ms⁻²
Therefore, the position, velocity and acceleration of the particle are 0.0395 m, -0.486 ms⁻¹ and -4725.791 ms⁻² respectively
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Use the Quadratic Formula to solve the equation
Answer:
Step-by-step explanation:
Find the average rate of change of the function from x = 1 to x = 4.
f(x) = 10x^2 + x
The average rate of change of the function from x = 1 to x = 4 is 14.90
What is a function?A function can be defined as an expression, law or rule that shows the relationship between two variables.
The variables are;
The independent variableThe dependent variableGiven the function;
f(x) = 10x^2 + x
For x = 1, let's substitute the value of x as 1
f(1) = 10(1)^2 + 1
f(1) = 10 + 1
f(1) = 11
For x = 4, let's substitute the value of x as 4
f(4) = 10(4)^2 + 4
f(4) = 10(16) + 4
f(4) = 160 + 4
f(4) = 164
The rate of change = 164/11 = 14. 90
Hence, the value is 14. 90
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