Answer:
The Answer is 10 Miles.
Step-by-step explanation:
The jet is 52,800 feet high.
There are 5,280 feet in a mile.
Divide 52,800 by 5280 to find miles:
52800 / 5280 = 10 Miles.
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Do a proportion
40/100= 8/x
8 x 100= 800
Cross multiply and divide
800 divided by 40= 20
So answer is 20
A
using the Cosine rule in ΔSTU
let t = SU, s = TU and u = ST, then
t² = u² + s² - (2us cos T )
substitute the appropriate values into the formula
t² = 5² + 9² - (2 × 5 × 9 × cos68° )
= 25 + 81 - 90cos68°
= 106 - 33.71 = 72.29
⇒ t =
≈ 8.5 in → A