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4 years ago

6

The height of a ball dropped from the top of a 450-foot tall building can be described by the expression

1 answer:

BaLLatris [955]4 years ago

8 0

Answer:

The answer is 386 feet.

Step-by-step explanation:

This equation simply asks to plug in a value that gives you the final value of the height. 450 is the initial height, and r (or l) is referred to as the amount of seconds after the item is dropped. 16 is the constant value of feet that the ball drops within one second.

Therefore, by substituting 4 for r (or l) and multiplying it by 16, you will receive 64 feet in 4 seconds. Finally, you need to subtract this from 450 feet, giving you a final answer of 386 feet.

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The function y=-16x^2+16x+32 represents the height in feet of a firework x seconds after it is launched

Nadya [2.5K]

Answer:

36feet

Step-by-step explanation:

Since we are not asked what to find, we can as well find the maximum height reached by the rocket

At max height, velocity is zero

V = dy/dx = 0

dy/dx = -32x + 16

0 = -32x+16

32x = 16

x = 16/32

x = 0.5s

Get the maximum height

y = -16(0.5)^2+16(0.5) + 32

y = -4+8+32

y = 36feet

Hence the max height reached by the rocket is 36feet

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3 years ago

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3 years ago

Read 2 more answers

Tim simplified the difference 1/2p-(1/4p-4) as 3/4p-4. Did he find the correct difference? Explain.

Doss [256]

Answer:

<em>TIM'S ANSWER IS WRONG.</em>

The correct simplification is $=\frac{p}{4}+4$ .

Step-by-step explanation:

Given the difference expression

$\frac{1}{2}p-\left(\frac{1}{4}p-4\right)$

Tim's answer : $\frac{3}{4}p-4$

<em />

<em>TIM'S ANSWER IS WRONG. </em>

Let us correctly simplify the difference expression

As

$=\frac{1}{2}p-\left(\frac{1}{4}p-4\right)$

$=\frac{p}{2}-\left(\frac{p}{4}-4\right)$

$=\frac{p}{2}-\frac{p}{4}+4$

Combine Like Terms:

$=(\frac{p}{2}-\frac{p}{4})+(4)$

$=\frac{p}{4}+4$ ∵ $\frac{p}{2}-\frac{p}{4}=\frac{p}{4}$

Hence, the correct simplification is $=\frac{p}{4}+4$ .

<em>Keywords: operation, difference</em>

<em> Learn more operations from brainly.com/question/768264</em>

<em> #learnwithBrainly</em>

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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