exam Maths Puzzle Numerical Ability

The equation h=-16tē + 112t gives the height of an arrow, shot upward from the ground with an initial velocity of 112 ft/s, where t is the time after the arrow leaves the ground. Find the time it takes for the arrow to reach a height of 180 ft.

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exam Other Question
DETERMINE WHICH 2 EQUATIONS REPRESENT PERPENDICULAR LINES.

A)Y=9X-3
B)Y=1/9X+3
C)Y=-1/9X+3
D)Y=1/9X-3 Add and simplify
t+r/tr^2 + 5t+r/t^2r