2 years ago

B/c =a what is c ????????????

Mathematics

1 answer:

timama [110]2 years ago

6 0

If you only want to know what it means ¨c¨ then it is the Denominator, cause you are referring a fraction.

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Answer:

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Step-by-step explanation:

The heights of the ball in feet is given by the equation as follows :

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Where t is the number of seconds after the ball was thrown.

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Put S = 18 ft

$-2.7t^2+40t+6.5=18\\\\-2.7t^2+40t=18-6.5\\\\-2.7t^2+40t-11.5=0$

It is a quadratic equation. Its solution is given by :

$t=\dfrac{-40+\sqrt{40^{2\ }-4\left(-2.7\right)\left(-11.5\right)}}{2\left(-2.7\right)},\dfrac{-40-\sqrt{40^{2\ }-4\left(-2.7\right)\left(-11.5\right)}}{2\left(-2.7\right)}\\\\t=0.293\ s,14.52\ s$

So, the ball is at first 0.293 s and then 14.52 s above the Moon's surface.

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