Answer:
You are correct, it is 1 hr 45 minutes since 2:30+30 = 3:00 and 1:15 + 3:00 = 4:15. 1:15+30 = 1:45.
Step-by-step explanation:
Answer:
c. -8
Step-by-step explanation:
Answer:
x ≈ 2.57
Step-by-step explanation:
Δ ACB and Δ AED are similar, thus the ratios of corresponding sides are equal, that is
= , substitute values
= ( cross- multiply )
7x = 18 ( divide both sides by 7 )
x = ≈ 2.57 ( to 2 dec. places )
Answer:
Step-by-step explanation:
Let y = -A cos B(t -c) + D
A, amplitude = 20ft
Period = 2π / B ( B = π / 15)
= 30
c = 0
Vertical shift D = 21.5 ft
Equation becomes
a) Top of the ferris wheel is
t = 15sec, 45sec, height = 41.5ft
b) At the bottom of the ferris wheel
t = 0, 30sec, 60 sec
height = 1.5ft
c) Exact middle of the ferris wheel
t = 15/ 2 = 7.5sec, 22.5sec, 37.5sec, 52.5sec
d)