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Gnesinka [82]
2 years ago
14

Solve equation using SQAURE ROOTS, show work. Round to the nearest hundredth if needed

Mathematics
1 answer:
ivann1987 [24]2 years ago
7 0

Answer:

x=8, x=4

Step-by-step explanation:

<u>Add 4 to both sides</u>

(x-6)^2=4

<u>Square root</u>

<u />(x-6)= \sqrt{4}

x - 6 = ±2

x = 8

OR x = 4

So, x=8 or x=4

<u />

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After a baseball is hit, the height h (in feet) of the ball above the ground t seconds after it is hit can be approximated by th
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Answer:

The ball will take 4.05 seconds to hit the ground.

Step-by-step explanation:

we have

h=-16t^{2}+64t+3

This is a quadratic equation (vertical parabola) open down

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we know that

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Solve the quadratic equation

For h=0

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The formula to solve a quadratic equation of the form

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in this problem we have

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so

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substitute in the formula  

t=\frac{-64(+/-)\sqrt{64^{2}-4(-16)(3)}} {2(-16)}

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t=\frac{64(+)\sqrt{4,288}} {32}=4.05\ sec

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