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Tanya [424]
2 years ago
7

Sue bought a bunch of snacks that each cost $2.50. Let y represent the total cost and x represent the number of snacks she bough

t. Pick which equation represents the proportional relationship between the total cost and the number of snacks she bought.
A.) 2.50(y) = x
B.)2.50 + y =x
C.) 2.50(x) = y
D.) 2.50 + x = y
Mathematics
1 answer:
Rudik [331]2 years ago
3 0

Answer:

C

Step-by-step explanation:

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2 years ago
(4 pts) If a rock is thrown vertically upward from the surface of Mars with an initial velocity of 15m/sec
Yuliya22 [10]

Answer:

Step-by-step explanation:

I see you're in college math, so we'll solve this with calculus, since it's the easiest way anyway.

The position equation is

s(t)=-1.86t^2+15t  That equation will give us the height of the rock at ANY TIME during its travels. I could find the height at 2 seconds by plugging in a 2 for t; I could find the height at 12 seconds by plugging in a 12 for t, etc.

The first derivative of position is velocity:

v(t) = -3.72t + 15 and you stated that the rock will be at its max height when the velocity is 0, so we plug in a 0 for v(t):

0 = -3.72t + 15 and solve for t:\

-15 = -3.72t so

t = 4.03 seconds. This is how long it takes to get to its max height. Knowing that, we can plug 4.03 seconds into the position equation to find the height at 4.03 seconds:

s(4.03) = -1.86(4.03)² + 15(4.03) so

s(4.03) = 30.2 meters.

Calculus is amazing. Much easier than most methods to solve problems like this.

7 0
2 years ago
How to do this problem 2 + 1/8 - 1 1/3
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Kate is making pizza she put 8 ounces of cheese on each pizza if she has 4 20ounce packages of cheese how many pieces can she ma
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Step-by-step explanation:


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3 years ago
1. Using the figure below, what is the measure of angle ABE?
Eva8 [605]

Answer:

see below

Step-by-step explanation:

Because ∠ABE and ∠CBD are vertical angles, ∠ABE = ∠CBD = 40°.

3 0
3 years ago
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