3 years ago

I need help to complete this

Mathematics

1 answer:

vovikov84 [41]3 years ago

4 0

Answer:

137 × 5 = 685

dont know answer for the second one...

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natima [27]

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3 years ago

A ball dropped from the top of a building has a height of s =576- 16t2 meters after t seconds. How long does it take the ball to

Step2247 [10]

Answer:

It will take 6 seconds for the ball to reach the ground.

Velocity: $-192\frac{\text{m}}{\text{s}}$ .

Step-by-step explanation:

We have been given that a ball dropped from the top of a building has a height of $s =576-16t^2$ meters after t seconds.

The ball will hit the ground, when height will be 0 meters, so we will equate height with 0 as:

$576-16t^2=0$

Let us solve for t.

$576-576-16t^2=-576$

$-16t^2=-576$

$\frac{-16t^2}{-16}=\frac{-576}{-16}$

$t^2=36$

Taking positive square root of both sides, we will get:

$\sqrt{t^2}=\sqrt{36}$

$t=6$

Therefore, it will take 6 seconds for the ball to reach the ground.

To find the ball's velocity at $t=6$ , we will take the derivative of position function and evaluate derivative at $t=6$ .

$s=576-16t^2$

$s'=\frac{d}{dt}(576)-\frac{d}{dt}(16t^2)$

$s'=0-32t$

$s'(6)=-32(6)$

$s'(6)=-192$

Therefore, the ball's velocity at the moment of impact would be $-192\frac{\text{m}}{\text{s}}$ .

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2 years ago

Rotate the figure 90 deg clockwise. It's asking for all like the prime points as well.

ss7ja [257]

Answer:

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2 years ago

Select all equations for which the point (2,3) is on the graph of the equation.

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I think the answer is F

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3 years ago

Solve for x <br> - 4x + 5 = -2x-1

Travka [436]

Answer:

the awncer to your question is x=3

Step-by-step explanation:

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3 years ago

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