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kicyunya [14]
3 years ago
13

A gazelle can change its speed from 0 to 45 mph in 2 seconds. What is the gazelle's acceleration?

Mathematics
2 answers:
Alex787 [66]3 years ago
3 0

Answer:

average acceleration a=change in velocity / time it took to get to velocity  

a=(45-0)mph / 2s = 22.5 mph/hr/s

Step-by-step explanation:


Kazeer [188]3 years ago
3 0

Answer:

22.5 m/s^2

Step-by-step explanation:

Givens

vi=0

vf = 45 mph

t = 2 seconds

a = ??

Formula

a = (vf  -   vi)/t

a = (45 - 0)/2

a = 22.5 m/s^2 That's an incredible change of speed.

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What is the distance between the points (-12, 11) and (-18, 17), to the<br> nearest tenth? *
Basile [38]

Answer:

8.5 units

Step-by-step explanation:

The distance between two points is given by

d=\sqrt{(x_2-x_1)^{2}+(y_2-y_1)^{2}}

Taking points (-12, 11) and (-18, 17) as the first and second points respectively then

d=\sqrt{(-18--12)^{2}+(17-11)^{2}}

d=\sqrt {36+36}

d=8.48528137423857 units

Rounded off to nearest tenths

d=8.5 units

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3 years ago
Hello, can anyone help please? :D
Lubov Fominskaja [6]

Answer:

just guess

Step-by-step explanation:

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6 0
2 years ago
Is 0.912 or 0.950 greater
pochemuha
<span>0.950. Hope this helps. :)</span>
5 0
3 years ago
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What value of x makes the equation -6x-20=-2x+4 (1-3×) true​
dmitriy555 [2]

Answer:

x = 3

Step-by-step explanation:

-6x - 20 = -2x + 4 (1 - 3x)

Distributive property

-6x - 20 = -2x + 4  - 12x

Combine like terms

-6x - 20 = -14x + 4  

Add 14x to both sides

-6x - 20 + 14x = -14x + 4  + 14x

Simplifying

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Add 20 to both sides

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4 0
3 years ago
Evaluate each expression for the given value of the variable.<br> x + 2x - x - 1; x = 2
MaRussiya [10]

x + 2x - x - 1

  • Substitute 2 for x into the expression.

(2) + 2(2) - (2) - 1

  • Multiply 2 * 2 first.

(2) + (4) - (2) - 1

  • Solve from left to right.
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6 - 2 - 1

  • Solve from left to right.
  • (6 - 2) - 1 = 4 - 1

4 - 1 = 3

<h3>Your answer is 3.</h3>
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3 years ago
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