Margie is standing on a bridge looking at the river below. She throws a rock over the bridge with an initial
velocity of 60 ft/sec. If the height, h, of the rock at the rime t seconds after it was thrown can be modeled by the
equation h(t) = −16t

2 + 60t + 72, how long will it take for the rock to reach the surface of the water? Round

to the nearest tenth.

Here we know that Margie is standing on a bridge looking at the river. She throws a rock over the bridge with an initial  velocity of 60 ft/sec. The height, h, of the rock at the rime t seconds after it was thrown can be modeled by the  equation:

To calculate how long will it take for the rock to reach the surface of the water, we need to set . So:

Given that time can't be negative, we just choose the positive value. Therefore, it will take 4.70 seconds for the rock to reach the surface water.

a

step-by-step explanation:

ok so the answer to your question is simple as long as you look at the different dimensions that contain the exemplary letters that combined in the right order give you words that eventually within the 5th dimension will conform and give you the correct answer to your question. hope i , stop looking at this easily, look at it with a spectral view.

step-by-step explanation:

told you