3 years ago

A 10-speed bicycle tire has a

Mathematics

1 answer:

trasher [3.6K]3 years ago

3 0

Answer:

288 ft.

Step-by-step explanation:

With each pedal turn, the tire rotates 3.4 times. Thus, to answer this question we multiply the circumference of the wheel by 3.4:

3.4(27 in)(π) = 288 feet

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Sofia hits a softball straight up. the equation h= -16t^2 + 90t models the height h, in feet, of the ball after t seconds. How l

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It is in the air 5.625 seconds.

Using the quadratic formula,

$t=\frac{-b\pm \sqrt{b^2-4ac}}{2a}
\\
\\=\frac{-90\pm \sqrt{90^2-4(-16)(0)}}{2(-16)}
\\
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\\
\\=\frac{-90\pm \sqrt{8100}}{-32}=\frac{-90\pm90}{-32}
\\
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\\
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