The algebraic expression would be 207-2d.
Hope this helps.
Answer:
The minimum volume of hot air needed to lift a hot air balloon carrying 800kg
Is 653.1m³
Step-by-step explanation:
This problem bothers on the density of materials in this problem air
Given data
Volume of air V=?
Mass of air m= 800kg
From tables the density of air is
ρ =1.225 kg/m3
Now to solve for the volume we have
ρ=m/v
v=m/ρ
v=800/1.225
Volume v = 653.1m³
Perimeter = 72 m
Side length = 18 m
Error checking:
18 + 18 + 18 + 18 = 72 m
Answer:
Incorrect
Step-by-step explanation:
The angle is acute,which means under right triangle's usual size.
You need at least 90 cm to have a right triangle so no she is incorrect