Answer:
x = 8
Step-by-step explanation:
Since the triangle is equilateral, then the 3 sides are congruent.
Equate any 2 sides and solve for x, that is
7x - 29 = 5x - 13 ( subtract 5x from both sides )
2x - 29 = - 13 ( add 29 to both sides )
2x = 16 ( divide both sides by 2 )
The triangle is equilateral, thus the 3 angles are congruent, thus
The measure of each angle is 60°
The total change in altitude= 960ft.
Rate at which balloon descend = 320 ft per minute
Time = 3 mins
Total height descended = 320 x 3
= 960 ft.
179.59 m³
Formula for sphere volume: V=4/3πr^3
