Answer:
B. W = (P - 2L) / 2
Step-by-step explanation:
(I'm gonna use capitals so it's easier to identify length and width variables)
P = 2L + 2W
Isolate w:
P - 2L = 2W
(P - 2L) / 2 = W
Answer: Yes, it is a real number. 3.4 is a rational number and rational numbers are real numbers. So 3.4 is a real number.
<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
Answer:
149 bru
Step-by-step explanation: