Answer: 5:6
Step-by-step explanation:
Answer:
<h2>-223,948</h2>
Step-by-step explanation:
The formula of a sum of terms of a gometric sequence:
a₁ - first term
r - common ratio
We have
Calculate a₁. Put n = 1:
Calculate the common ratio:
√52 -√13 +√117
= 2√13 -√13 +3√13
= 4√13 . . . . matches selection A
_____
√52 = √(4·13) = (√4)(√13) = 2√13
√117 = √(9·13) = (√9)(√13) = 3√13
Answer:
height = h = 987.92
Step-by-step explanation: See Annex
The official Visual Flight Rules require more than 1000 ft , as a distance between the ground and bottom of clouds, for a plane to fly without instrumentation
We have to determine, with available data if we are in position of that distance
If we look at picture (in annex ) tangent of the elevation angle 51⁰ is
from tables tan 51⁰ = 1.2349 and we know tan ∠α = opposite leg/ adjacent leg
then
tan 51⁰ = 1.2349 = h/ 800
h = 987.92
So we don´t have enough height to let flying without instrumentation
