a) since the height is defined by a function, we can find the turning point of the quadratic , which is where the ball will have the highest point. The turning point is where the gradient is equal to zero so we differentiate first

$h(t) = -16t^{2} + 168t + 45\\h'(t)= -32t+168\\0=-32t+168\\t=5.3s$

8 0

3 years ago

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HELPPP !!!

Masja [62]

I just realized I forgot a whole unit we did this year, but a(n)=5n-12
is the explicit form if that helps at all

7 0

3 years ago

How do u do this problem: W/6+5/8=-1 3/8 <br> I got this answer: -1 53/64

Kobotan [32]

We have question
$\frac{W}{6}+ \frac{5}{8} =-1 \frac{3}{8}$
$\frac{W}{6} + \frac{5}{8} =- \frac{11}{8}$ <span> /*8 (multiply both sides by 8)</span>
$\frac{W8}{6} + \frac{5}{1} =- \frac{11}{1}$ /*6 (multiply both sides by 6)
$8W+5*6=-11*6$ /-30 both sides
8W=-66-30
8W=-96
W=-12

6 0

3 years ago

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