The equation is h=-16t²+40t+5.The ball will hit the ground when h=0. So:
0=-16t²+40t+5
16t²-40t-5=0
Using the quadratic formula, we get a positive value for t of <span>2.61930639376 seconds.
☺☺☺☺
</span>

8 0

3 years ago

The circle graph shows the different vitamins present in a health drink. Identify the measure of arc AC. HELP PLEASE ASAP!!

Burka [1]

The central angle AOC subtended by arc AC has measure equal to 46% of a complete revolution, or $0.46\cdot360^\circ=165.6^\circ$ , so $\boxed{m\widehat{AC}=165.6^\circ}$ .

7 0

3 years ago

Which expression is equivalent to 5-8

MAXImum [283]

It’s equivalent to 10/16 and 40/64

3 0

3 years ago