Answers
y = -3x +2
The general equation for a linear line is y = mx + b
Where:
m = the slope of the lineb = the y-interceptTo find the slope of a line we can use the formula [tex]\frac{rise}{run}[/tex]
Rise over run can be found suing two different points on the line.
in this case: (-1,5) and (1,-1)
The rise is the difference in y values: [tex]y_2 -y_1[/tex]
rise = (-1) - 5
rise = -6
run = [tex]x_2 - x_1[/tex]
run = 1 - (-1)
run = 2
rise/run = [tex]\frac{-6}{2}[/tex]
rise/ run = -3
We now have y = -3x + b
To find b we just look at the graph and locate a what point x = 0
this occurs at (0,2)b = 2Related Questions
Help thanks with d pls
Answers
At point 1, the carrying capacity is both the area is around 5, and therefore it can very well be said that growth rate in Area A is at a much higher pace than that of Area B. And that can subsequently be verified from the succeding graph.
What is Carrying Capacity?
The quantity of humans, other living species, or crops that a place can support without negatively impacting the environment is termed as carrying capacity.
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Once an antibiotic is given, number of bacteria decreases at a rate of 15% /day. There
were about 15,000 bacteria prior to the treatment. The graph models the number of
bacteria after x days of treatment.
W
What are the key features of the exponential function modeled in terms of this
situation and how can they be interpreted?
Answers
Asymptote indicates that as time increases, the number of bacteria approaches 0.
What is Graph?Graph is a mathematical representation of a network and it describes the relationship between lines and points.
Given,
Once an antibiotic is given, number of bacteria decreases at a rate of 15% /day.
There were about 15,000 bacteria prior to the treatment.
The line y = 0 is an asymptote of the graph.
The y-intercept is 15,000.
The y-intercept represents the number of bacteria when treatment began.
The asymptote indicates that as time increases, the number of bacteria approaches 0.
Hence, asymptote indicates that as time increases, the number of bacteria approaches 0.
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-6.6 < 1.7 + u Solve the inequality for u.
Simplify your answer as much as possible.
Answers
Solving the inequality -6.6 < 1.7 + u for u, the solution is simplified as: u > -8.3 or -8.3 < u.
What is an Inequality?In maths, an inequality is defined as a statement that is used to compare two quantities that are unequal. For example, we can state that 5 is greater than 3 + 1, or 5x is less than 4x + 3x. We can equally state that a given value of a variable can be equal to or greater than a number, and so on.
Basically, we are comparing two unequal quantities when we state inequalities.
Given the inequality, -6.6 < 1.7 + u, we are asked to solve the inequality for u. That is, we need to find the possible value that u represents in the inequality or that would make the inequality true.
Therefore:
-6.6 < 1.7 + u
Subtract 1.7 from both sides
-6.6 - 1.7 < 1.7 + u - 1.7 [subtraction property of equality]
-8.3 < u
It can be rewritten as:
u > -8.3
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10. (Modeling) Height of a Projectile A projectile is fired vertically upward, and its
height s(t) in feet after t seconds is given by the function defined by
s(t) = -16t² + 800t + 600.
(a) From what height was the projectile fired?
(b) After how many seconds will it reach its maximum height?
(c) What is the maximum height it will reach?
(d) Between what two times (in seconds, to the nearest tenth) will it be more than
5000 ft above the ground?
(e) How long to the nearest tenth of a second will the projectile be in the air?
fuel
Answers
The answer is a) 0 height, b) 25 seconds c) 10,600 feet d) 3 times e) (x+1)(x-3)(x+5).
A projectile is fired vertically upward, and its height s(t) in feet after t seconds is given by the function defined by
s(t) = -16t² + 800t + 600.
To find out
(a) From what height was the projectile fired
Given height functions: s(t) = -16t² + 800t + 600
Now,
[tex]s^{'}(t)[/tex] - -32t+800
(b) Now, to find the time it will attain maximum height,
[tex]s^{'}(t)[/tex] = 0
-32t = -800
t = 25 seconds
(c) The maximum height it will reach
= [tex]-16*(25)^{2} + 800*25+600[/tex]
= -10000+20000+600
= 10,600 feet
(d) Between what two times (in seconds, to the nearest tenth) will it be more than 5000 ft above the ground
By putting x = 3
[tex]P(3) = 4*(3)^{3}-50 * (3)^{2}-8*3+6[/tex]
= 108-90-24+6
= 114-114
= 0
Therefore x = 3 is a zero of P(x)
(e) How long to the nearest tenth of a second will the projectile be in the air
Now, factoring,
[tex]f(x) = x^{3}+3x^{2} -13x-15\\ \\= x^{3}+x^{2} +2x^{2}+2x-15x-15\\ \\ = (x+1)(x^{2} +5x-3x-15)\\\\= (x+1)(x(x+5)-3(x+5))\\\\=(x+1)(x-3)(x+5)[/tex]
Hence the answer is a) 0 height, b) 25 seconds c) 10,600 feet d) 3 times e) (x+1)(x-3)(x+5)
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Find the 8th term of the geometric sequence 10, -20, 40, ...
Answers
Answer:
a₈ = - 1280
Step-by-step explanation:
the nth term of a geometric sequence is
[tex]a_{n}[/tex] = a₁ [tex](r)^{n-1}[/tex]
where a₁ is the first term and r the common ratio
here a₁ = 10 and r = [tex]\frac{a_{2} }{a_{1} }[/tex] = [tex]\frac{-20}{10}[/tex] = - 2 , then
a₈ = 10 [tex](-2)^{7}[/tex] = 10 × - 128 = - 1280
The 8th term of geometric sequence is -1280
Step of calculate geometric sequence
This is a geometric sequence. The geometric number sequence is characterized by the presence of a ratio (the ratio between the next term and the previous term). The next term is the product of the previous term with the ratio. Another sequence called arithmetic sequence is characterized by the presence of difference (the difference between the next term and the previous term).
10, -20, 40, ...
We will first analyze the things that can be found in the three numbers in the sequence. The thing to look for is the first term (a) and also the ratio (r). The first term can also be written as U1, where the 2nd term is U2, and the n-th term is Un.
[tex]a = 10[/tex]
[tex]r=\frac{U2}{U1}[/tex]
[tex]r=\frac{-20}{10}[/tex]
[tex]r=2[/tex]
When the first term (U1) and ratio (r) have been obtained, then we can find the 8th term by substitute it in the formula.
[tex]Un=ar^{n-1}[/tex]
With that formula, let's find the 8th term.
[tex]U8=10(-2)^{8-1}[/tex]
[tex]U8=10(-2)^{7}\\U8=10(-128)\\U8=-1280[/tex]
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A printing company calculates its costs using the function e(x) 0.3²-125x+100 and calculates its revenue using the function (x) -
function is p(x) r(x) - c(x)
Which function represents the company's profit?
A p(x)= 0.7x² + 35x + 190
B
(x) 0.7x² - 285x + 100
CP(x)= -0.7x² + 35x + 190
D p(x)= -0.7x² + 285x - 190
0.4x + 160x The company's profit
Answers
Answer:yes
Step-by-step explanation:
yes
it takes an airplane 1 hour 30 minutes to fly 600 km against the wind. the return trip with the wind takes only 1 hour. find the total flying time for the round trip if there was no wind.
Answers
The total flying time for the round trip if there was no wind would be 2 hours 24 minutes. The result is obtained by using the elimination method.
What is elimination method?The elimination method is a method for solving system of linear equations where we eliminate one variable so that we can get an equation in one variable. In doing that, we can either add or subtract the equations.
Given the case that an airplane takes 1 hour 30 minutes to fly 600 km against the wind. It takes only 1 hour in the return trip.
What would be the total flying time for the round trip if there was no wind?
Let's say:
v = the speed of the airplanew = the speed of the windWhen the airplane leaves,
v - w = 600 km / 1.5 hour
v - w = 400 kph ... (equation 1)
When the airplane returns,
v + w = 600 km / 1 hour
v + w = 600 kph ... (equation 2)
We eliminate the equation 2 and 1 to get the speed of the airplane.
v - w = 400 kph
v + w = 600 kph +
2v = 1000 kph
v = 1000 ÷ 2
v = 500 kph
For the round trip, the airplane would fly 600 × 2 = 1200 km.
The total flying time if there was no wind would be
t = s/v
t = 1200/500
t = 2.4 hour
t = 2 hours 24 minutes
Hence, the total flying time for the round trip if there was no wind is 2 hours 24 minutes.
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growth or decay, and determine the percentage rate of increase or decrease.
y
=
660
(
0.902
)
x
Answers
The expression y = 660(0.902)ˣ represents a decay , the rate of decrease is 9.8% .
In the question ,
it is given that ,
the the exponential function is y = 660(0.902)ˣ
we need to determine that , the equation represents a growth or decay .
0.902 is the variable that will determine a growth or decay .
Since, 0.902 is less than 1 , so it represents a decay function .
To find the rate we subtract 0.902 from 1
= 1 - 0.902
= 0.098
= 9.8% decrease rate
Therefore , The expression y = 660(0.902)ˣ represents a decay , the rate of decrease is 9.8% .
The given question is incomplete , the complete question is
Identify if it's Growth or Decay , and determine the percentage rate of increase or decrease , the function is y = 660(0.902)ˣ ?
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Math trigonometry non right angle help please
guys please
Answers
Answer:
about 21.3 cm²
Step-by-step explanation:
Given a triangle with three sides 6 cm, 8 cm, and 12 cm, and smallest angle 26.4°, you want the area.
Area using sine formulaA = 1/2ab·sin(C)
A = 1/2(12 cm)(8 cm)·sin(26.4°) ≈ 21.34 . . . . square units
Area using Heron's formulaThe semiperimeter is ...
s = (6 +8 +12)/2 = 13
The area is ...
A = √(s(s -a)(s -b)(s -c))
A = √(13·(13 -12)(13 -8)(13 -6)) = √(13·1·5·7) = √455
A ≈ 21.33 . . . . square centimeters
The area of the triangle is about 21.3 cm².
__
Additional comment
The problem with over specifying the dimensions of a geometry problem is that it is often difficult to make them consistent. Here, the area values agree to three significant figures. That is about all we can expect, given the angle precision is 3 significant figures.
Your answer depends on the set of dimensions you choose to use. It will be different yet if you use the Law of Sines to find angle A or B for the Sine Formula, especially if you round the angle value to tenths.
The attachment shows the solution using side lengths only.
HELP PLEASEEE!!!!! i dont know what to do
Answers
Answer:
1. 51°
2. 55°
3. 5x + 10
Step-by-step explanation:
1. We know ∠B + 39° = 90°, so ∠B = 90 - 39 = 51
2. We can use an algebraic equation to solve this problem.
2x + 70 = 180
2x + 70 (-70) = 180 (-70)
2x (/2) = 110 (/2)
x = 55
3. ∠ABD = (3x + 10) + (2x) = 5x + 10
rita and tina each make 11$ an hour
Answers
The expressions that represent the total weekly wages of Rita is 11r + 32 and of Tina is 11t.
We are given;
Rita and Tina each make $11 an hour working as cashiers at a supermarket.
Last week, Rita worked r hours while Tina worked t hours.
Rita also worked overtime hours during the week, for which she was paid an extra $32 flat wage.
We need to find the expressions that represent the total weekly wages of both Rita and Tina.
Let us form an algebraic expression for both one by one;
For Rita:
Number of hours Rita worked for = r
Cost per hour = $ 11
The amount for overtime Rita earned = $32
So, the equation expressing the total weekly wage for Rita = 11r + 32.
For Tina :
Number of hours Tina worked for = t
Cost per hour = $ 11
So, the equation expressing the total weekly wage for Tina = 11t.
Thus, the expressions that represent the total weekly wages of Rita is 11r + 32 and of Tina is 11t.
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Uplift occurs at a rate of 0. 1 m per 1,000 years. How much will the uplift change over 1,000,000 years? responses 0. 1 m 0. 1 m 100 m 100 m 1,000 m 1,000 m 1,000,000 m.
Answers
As per given information about change in uplift it occurs at the rate of 0.1 m per 1,000 years then change in uplift over 1,000,000 years is equal to 100m.
As given in the question,
Rate of occurring of uplift is equal to 0.1m per 1000 years
Represent the given relation in equality form we get,
Change of uplift in 1000 years = 0.1 m
⇒ 1 year = 0.1 m / 1000
⇒ 1,000, 000 years = ( 0.1 m / 1,000 ) × 1,000, 000
⇒ 1,000, 000 years = ( 1 m / 10,000 ) × 1,000, 000
⇒ 1,000, 000 years = 100 m
Therefore, for given information about change in uplift it occurs at the rate of 0.1 m per 1,000 years then change in uplift over 1,000,000 years is equal to 100m.
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Kareem correctly answered 85% of the questions on his last math test. If he missed 6 problems, how many questions were on the test
Answers
Answer:
40 questions
Step-by-step explanation:
100-85=15
15/100=6/x
cross multiply
15x=100(6)
15x=600
x=40
there were 40 questions on the test
hopes this helps please mark brainliest
If you are tossing a six-sided die, what is the probability of getting either a 1 or a 2 on your first toss and a 1 or a 2 on your second toss?.
Answers
A six sided dice is tossed twice. The probability of getting either a 1 or a 2 on your first toss and a 1 or a 2 on your second toss is 1/9 .
A dice has six faces or sides and it is throws twice . When a dice is toss first time,
Total possible outcomes on toss = 6 ={ 1,2,3,4,5,6}
In our first toss we want to get 1 or 2
So, favourable outcomes of getting 1 or 2 = 2
Probability of getting 1 or 2 on first toss= favourable cases /total outcomes = 2/6 = 1/3
For second toss, we want to get a1 or a2 again.
Total possible outcomes = 6
Probability of getting a1 or a2 on second toss= 2/6= 1/3
Now, Multiply these probsbilites togethers and chance of getting 1 or 2 on first and second which is 1/3× 1/3 = 1/9
Hence , probability of getting either a 1 or a 2 on your first toss and a 1 or a 2 on your second toss is 1/9.
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Please help me please i beg you can someone tell me if my answer is right or not
Answers
Answer:
Absolutely correct. you got the answer
(a) a box contains 3 red balls, 2 white balls, and 5 black balls. two balls are drawn at random from the box (with replacement of the first before the second is drawn). what is the probability of getting a red ball on the first draw and a white ball on the second? (enter your probability as a fraction.)
Answers
Answer:2
Step-by-step explanation:i did it
A jeweler had a fixed amount of gold to make bracelets and necklaces. The amount of gold in each bracelet is 5 grams and the amount of gold in each necklace is 24 grams. The jeweler made a total of 12 bracelets and necklaces using 155 grams of gold. Determine the number of bracelets made and the number of necklaces made.
Answers
PLSS HELP AASP I NEED THIS LIKE RNN
Answers
Answer:
4/6 and 6/9
Put 6 in both the boxes as the both ratios will be equal to 2/3 if 6 is put.
Answer:
[tex] \frac{4}{6} \: and \: \frac{6}{9} [/tex]
An animal shelter wants to track its profit for each animal that is
adopted. Each animal costs $65 dollars to adopt. What is the
equation for the proportional relationship?
Answers
The equation for the proportional relationship is y = 65x
The animal shelter wants to track its profit for each animal that is
adopted.
The cost of each animal adoption = $65
Consider the number of animal adoption = x
Consider the total profit from animal adoption = y
From the given the details, we can say that the profit from the animal adoption is directly proportional to the number of animal adoption,
Then the relationship will be
y ∝ x
y = kx
Here the cost of each animal adoption is k = 65
Then the equation will be
y = 65x
Hence, the equation for the proportional relationship is y = 65x
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What is the value of sin(A)?
Answers
Answer: 3/5
Step-by-step explanation:
Once such a triangle is chosen, the sine of the angle is equal to the length of the opposite side, divided by the length of the hypotenuse: The other trigonometric functions of the angle can be defined similarly; for example, the tangent is the ratio between the opposite and adjacent sides. As stated, the values and.
I need help for #4 You have to find the slope and I missed a day at school and I am confused on what to do
Answers
In the formula y=mx+b, m is the slope and in this given problem m is equal to 3/2
Challenge and each go to a hardware tore to buy wire. The table how the cot y in dollar for of the wire they need. Need of the wire. Need of the wire. How much will each of them pend for wire?
Answers
This is the required final answer Emily spends $300y/x and Andy spends $432y/x for wire.
The answer provided below has been developed in a clear step-by-step manner.
1 foot =12 inches
1 yard=36 inches
Emily needs (25×12)=300 inches wire
and Andy needs (12×36)=432inches wire
As the cost for x inches wire is $y
cost for a 1-inch wire is $x/y
So, the cost for 300 inches of wire is $300y/x
cost for 432 inches of wire is $432y/x
so, Emily spends $300y/x
and Andy spends $432y/x for wire.
More than 20 different currencies go by the name dollar. The Australian dollar, Brunei dollar, Canadian dollar, Hong Kong dollar, Hogan dollar, Jamaican dollar, Liberian dollar, Namibian dollar, New Taiwan dollar, New Zealand dollar, Singapore dollar, United States dollar, Trinidad and Tobago dollar, and a number of others are among them. Like many nations that use the peso as their currency, the majority of those currencies are denoted by the dollar sign $.
The word "dollar" is a translation of the German word "thaler," which means "person or thing from the valley" in English. America's monetary unit is called after the "thaler," the name given to the first silver mine-produced coins, which were initially coined in Joachimsthal, Bohemia, in 1519.
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A telecommunications company will be laying new fiber optic cables underground. One cable will be perpendicular to the road shown, passing through the point ( 7, 2 . At what point will the cable pass through the road?
Answers
The point at which this cable would pass through the road shown is at the y-intercept of (0, -17/2).
How to determine an equation and the point on this perpendicular line?Mathematically, the slope of a straight line can be calculated by using this formula;
Slope, m = (Change in y-axis, Δy)/(Change in x-axis, Δx)
Slope, m = (y₂ - y₁)/(x₂ - x₁)
By critically observing the road shown in the graph above, the points on the line include the following:
Points (x, y) = (0, -2)
Points (x, y) = (-3, 0)
Substituting the given points into the formula, we have;
Slope, m = (0 + 2)/(-3 - 0)
Slope, m = 2/-3
Slope, m = -2/3.
In Mathematics, a condition that must be met for two lines to be perpendicular is given by:
m₁ × m₂ = -1
-2/3 × m₂ = -1
-2m₂ = -3
m₂ = 3/2
At point (7, 2), a linear equation for the line can be calculated by using the point-slope form:
y - y₁ = m(x - x₁)
Where:
m represents the slope.x and y represent the points.c represents the y-intercept.Substituting the given points into the formula, we have;
y - 2 = 3/2(x - 7)
y - 2 = 3x/2 - 21/2
y = 3x/2 - 21/2 + 2
y = 3x/2 - 17/2
At the y-intercept of (0, -17/2), the cable pass through the road.
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The distance between the school and the park is 6 km. There are 1.6 km in 1 mile.How many miles apart are the school and the park
Answers
Answer:
3.7miles
Step-by-step explanation:
divide the length value by 1.6
What is the sum of the x-values that represent the solution for this system of equations?
1+2x=y
y=4x^2+6x−2
Answers
Now you have 4x^2 +6x -2 = 2x+1
Subtract 2x and 1 from both sides and you get
4x^2 +4x -3 =0.
If you’ve learned the quadratic formula you can plug it in here and get 0.5 and -1.5 which adds together to be -1
If you haven’t you can do the normal factoring method of multiplying the a and c and seeing which ones add up to b. So you would get what factors of -12 add up to 4. That would be 6 and -2. Put those in you parenthesis and do your normal factoring equation to get (2x-1) and (2x+3)
f(x)=x² + 6x + 2; Find f(-6)
Answers
Answer: 2
Step-by-step explanation:
if you plug in -6 into x, we get
36 - 36 + 2
the 36s will cancel each other out, leaving us with only 2 as our final answer.
Answer: -70
Step-by-step explanation:
-[tex]6^{2}[/tex] + 6(-6)+2
= -36 - 36 + 2
= - 70
Graph the line with the given point and slope. the line through (0,0) with slope 6/5
Answers
Check the picture below.
The histogram below shows information about the honey produced by some beehives in one year. 400 beehives each produced between 16 kg and 18 kg of honey. Use this information to work out the value of x on the frequency density axis. If your answer is a decimal, give it to 1 d.p.
Answers
The value of x on the frequency density axis is 200.
What is frequency?
The frequency of a repeated event is its number of instances per unit of time. In some cases, it is also referred to as temporal frequency or ordinary frequency to underline differences with spatial and angular frequencies, respectively.
What is density?
The mass of a substance per unit of volume is its density. Density is most frequently represented by the symbol, however, the Latin letter D may also be used.
Here, we have
x is about half of the number of beehives producing 16 to 18 kg of honey, for the middle blue bar.
x = half of 400
x = 200
Hence, The value of x on the frequency density axis is 200.
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A discount of 25 % is allowed on an article marked at rs 17 500. calculate the discount
.
Answers
Answer: 4,375 rs
Step-by-step explanation:
25% × 17,500 = 4,375
Answer:
$4375
Step-by-step explanation:
25 percent *17500 =
(25:100)*17500 =
(25*17500):100 =
437500:100 = 4375
Now we have: 25 percent of 17500 = 4375
Solve the equation.
x-2/5=2/3-3x-2/6
Answers
Answer:
11/48
Step-by-step explanation:
x-2/5=2/3-3x-2/6
collect like terms
x-2/5 + 3x = 2/3 - 2/6
taking LCM on both sides
[(x-2) + 5(3x)]/5 = [2(2) -2]/6
(16x - 2)/5 = 2/6
cross multiply
6(16x - 2) = 5(2)
96x - 12 = 10
96x = 22
therefore; X = 22/96
= 11/48
CHECK:
(11/48 - 2)/5 = 2/3 - 3(11/48) - 2/6
(-85/48)/5 = 2/3 - 11/16 - 2/6
-85/48 × ⅕ = -17/48
-17/48 = -17/48
Answer:
[tex]x=\frac{11}{60}[/tex]
Step-by-step explanation:
Given the equation
[tex]x-\frac{2}{5}=\frac{2}{3}-3x-\frac{2}{6}[/tex]
Lets solve for x.
Simplify the right side of the equation.
Cancel the common factor of 2 and 6 .
Factor 2 out of 2 .
[tex]x-\frac{2}{5}=\frac{2}{3}-3x-\frac{2(1)}{2(3)}[/tex]
[tex]x-\frac{2}{5}=\frac{2}{3}-3x-\frac{1}{3}[/tex]
Combine the numerators over the common denominator.
[tex]x-\frac{2}{5}=-3x-\frac{2-1}{3}[/tex]
[tex]x-\frac{2}{5}=-3x-\frac{1}{3}[/tex]
Move all terms containing x to the left side of the equation.
Add [tex]3x[/tex] to both sides of the equation.
[tex]x-\frac{2}{5}+3x=\frac{1}{3}[/tex]
Add [tex]x[/tex] and [tex]3x[/tex].
[tex]4x-\frac{2}{5}=\frac{1}{3}[/tex]
Move all terms not containing x to the right side of the equation.
Add [tex]\frac{2}{5}[/tex] to both sides of the equation.
[tex]4x=\frac{1}{3}+\frac{2}{5}[/tex]
To write [tex]\frac{1}{3}[/tex] as a fraction with a common denominator, multiply by [tex]\frac{5}{5}[/tex] .
[tex]4x=\frac{1}{3}*\frac{5}{5} +\frac{2}{5}[/tex]
To write [tex]\frac{2}{5}[/tex] as a fraction with a common denominator, multiply by [tex]\frac{3}{3}[/tex]
[tex]4x=\frac{1}{3}*\frac{5}{5} +\frac{2}{5}*\frac{3}{3}[/tex]
Simplify.
Write each expression with a common denominator of 15 , by multiplying each by an appropriate factor of 1 .
[tex]4x=\frac{11}{15}[/tex]
Divide each term in [tex]4x=\frac{11}{15}[/tex] by 4 and simplify.
[tex]x=\frac{11}{60}[/tex]