For perimeter, you add everything on the outside. You got it right. Good job!
A) We can use the linear approximation to estimate the amount of time it takes. We're given that the linear approximation to t at the point x = 0 is t(x) ≈ L(x) = d(1–(x/60)). If it drives 84 miles at 62 mi/hr, we'll plug 84 in for d and 62 – 60 = 2 in for x to approximate the amount of time it takes.
L(2) = 84(1 – 2/60) = 81.2 minutes
So the answer for part a is 81.2 minutes.
b) Exact time = Distance/Speed = 84/62 = 1.35 hours, which is equivalent to 1.35 * 60 = 81.3 minutes.
Answer:
to do this we have to divide 43 by 83
0.51807228915
so the frequency is about 51.8%
A) 1150 yards
B) 26.09 seconds
- h - 17 = 19 + h
-2h = 36
h = -18
Hope this helps!!