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polet [3.4K]
2 years ago
15

Justin drives west at 20 m/s, then slows to a stop at the red light. A graph of his acceleration over time is shown below, where

eastward is the positive acceleration direction. Which graph shows his velocity over time

Mathematics
2 answers:
pychu [463]2 years ago
7 0

Answer:

b

Step-by-step explanation:

khan academy

Yuki888 [10]2 years ago
3 0

If you get one similar to this one talking about Bill it’s the graph with positive 2 as it’s constant. Sry I couldn’t help with this question in particular.

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The function C(x)=20x+4,000 represents the cost to produce x number of items. How many items should be produced so that the aver
NeX [460]

Answer:

More than 200 items must be produced to keep the average cost below $40 per item.

Step-by-step explanation:

5 0
3 years ago
What is the equation of the line shown in the graph? (-3,1) (2,-4)
ki77a [65]

Answer:

x + y = -2

Step-by-step explanation:

The two primary equations to remember when dealing with graphing 2-variable equations are: ax + by = c (a & b are the x & y coefficients, respectively), and the other is y = mx + c (m = slope, x & y represent themselves). There is another equation to find the slope. If not already known, it's: ∆y/∆x {∆(aka Delta) = difference}. So, since that's all been established, we can proceed to calculate your question:

1) Find your slope: 1 - (-4) = 5 for your y-variable. And -3 - 2 = -5 for your x-variable. So your slope = 5/-5 = -1

2) Use the y = mx + c equation together with either set of (x,y) coordinates to get the equation 1 = (-1)(-3) + c. Which gives you c = -2

3) So, going back to the main equation to remember, the ax + by = c, use a one of your given sets of x,y coordinates and input your known values for x, y, & c to get: a(-3) + b(1) = (-2) and do the same with other set (these are just double-checks, coefficients are all equal to 1 anyways). So, you should arrive to the equation: x + y = -2

4 0
2 years ago
If the population of a town grew 15% up to 76,894, what was the population lest year?
frozen [14]
Let's first find the equation to find what the population went up to. X, will be the population of last year.
1.15x=76,894
Now, we need x by itself, so we need to divide both sides by 1.15.
76,894÷1.15≈66,864
There are decimals, but for this problem, hae .3478 of a person would not fit.
We can check our answer.
66,864×.15=10,029.6
10,029.6+66,864=76,893.6 (rounds up to 76,864)
So the population of the town last year was about 66,864 (66,864.3478) people.
4 0
3 years ago
Which method will determine the volume of the prism with dimensions 2 times 2 1/4 times 4 shown below
Tems11 [23]
Was increased by 1 inch, the new measure of each side would be 4 inches.
5 0
3 years ago
7.5% of what number is equal to 85% of 200?
Ksivusya [100]
Solving:

\frac{7.5}{100} *x =  \frac{85}{100} * 200

\frac{7.5x}{\diagup\!\!\!\!\!\!\!\!100} = \frac{17000}{\diagup\!\!\!\!\!\!\!\!100}
7.5x = 17000
x =  \frac{17000}{7.5}
x = 2266.6666... \:\to \boxed{\boxed{x \approx 2266.67}}\end{array}}\qquad\quad\checkmark
8 0
3 years ago
Read 2 more answers
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