To find the suum the formula is (n - 2) x 180 degrees
Answer:
hi there, I like your pfp XD
Anyways the answer should be 18
Step-by-step explanation:
pattern:
-1, +2, -3, +4, -5, +6, -7, +8, -9, +10, -11, +12, -13, +14, -15
<h2>
Change of the distance between the observer and the airplane when X = 5 miles is 348.84 mph</h2>
Step-by-step explanation:
We have by Pythagoras theorem
Distance between the observer and the airplane² = Horizontal distance² + Altitude²
d² = h² + a²
Here we have
h = X = 5 miles
a = 7 miles
d² = 5² + 7² = 74
d =8.60 miles

Differentiating d² = h² + a² with respect to time

Change of the distance between the observer and the airplane when X = 5 miles is 348.84 mph
You have to simplify the 1/5 first.
Then simplify the square root of 1 to equal 1
Then rationalize the denominator
Then simplify
Answer:
67
Step-by-step explanation:
its a 90 degree angle so u have to do 90-23 which equals to 67