Answer:
65
73
Step-by-step explanation:
9^2 - 4^2
Exponents first
81 - 16
65
3^2 +8^2
Exponents first
9+64
73
Answer:
18/11
Step-by-step explanation:
To get the reciprocal all you do is flip over the fraction <3
To find the time to reach the maximum height you can subtract the constant 6 and write the function as:
h'(t) = -16t^2 + 50t
Then factor it: h'(t) = -2t(8t-25)
Then find the two roots:
t =0 and
8t - 25 = 0 ⇒ t = 25/8 = 3.125
The vertex is in the half between 0 and 3.125, i.e. [0+3.125]/2 = 1.5625
Then the time searched is approximately 1.56 seconds.
You just average the x and y. So for x it is (3+-5)/2 = -1 and for y it is (8+-1)/2=3.5.
The midpoint is (-1,3.5). See picture for a graphical explanation.
