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2 years ago

5

If a rock falls from 125 feet, estimate how long it will take the rock to hit the ground. Estimate the square root to the neares

t integer before dividing. Express your answer as a decimal. about seconds

1 answer:

RideAnS [48]2 years ago

8 0

Answer:

it takes about 2.79 seconds for the object to hit the ground

Step-by-step explanation:

t√h/4

h=125 feet

t=√125/4=√25×√5/4

t=5√5/4=11.18/4

t=2.79 secs

it takes the object 2.79 seconds to

hit theground

hope this helps. kindly give a feedback if you need more help..

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Underline all the ordered pairs (x,y) that are solutions to the equation y=2x+1.

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Answer:

<u>(3,7)</u> (7,3) (−1,14) <u>(0,1)</u> <u>(12,25)</u>

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Step-by-step explanation:

We have the following function:

$y = 2x+1$ .

We are going to check if each ordered pair is a solution.

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If when $x = 3, y = 7$ , it is a solution.

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This ordered pair is a solution.

(7,3)

If when $x = 7, y = 3$ , it is a solution.

$y = 2x + 1 = 2(7) + 1 = 15$

This ordered pair is not a solution.

(-1,14)

If when $x = -1, y = 14$ , it is a solution.

$y = 2x + 1 = 2(-1) + 1 = -1$

This ordered pair is not a solution.

(0,1)

If when $x = 0, y = 1$ , it is a solution.

$y = 2x + 1 = 2(0) + 1 = 1$

This ordered pair is a solution.

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If when $x = 12, y = 25$ , it is a solution.

$y = 2x + 1 = 2(12) + 1 = 25$

This ordered pair is a solution.

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If when $x = 5, y = 11$ , it is a solution.

$y = 2x + 1 = 2(5) + 1 = 11$

This ordered pair is a solution.

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If when $x = 0, y = 12$ , it is a solution.

$y = 2x + 1 = 2(0) + 1 = 1$

This ordered pair is not a solution.

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If when $x = 1, y = 8$ , it is a solution.

$y = 2x + 1 = 2(1) + 1 = 3$

This ordered pair is not a solution.

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If when $x = 12, y = 0$ , it is a solution.

$y = 2x + 1 = 2(12) + 1 = 25$

This ordered pair is not a solution.

(-1,-1)

If when $x = -1, y = -1$ , it is a solution.

$y = 2x + 1 = 2(-1) + 1 = -1$

This ordered pair is a solution.

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