Answer:
Rectangle w=72
Step-by-step explanation:
Rectangle
Solve for
width
w
=
72
cm
l
Length
cm
P
Perimeter
cm
Answer:
The second one
Step-by-step explanation:
Additive identity is adding 0 to a number
Answer:
x=4-3/x
Step-by-step explanation:
x^2-4x+3=0
x^2-4x=-3
x^2=4x-3
x=4-3/x
Answer: 3.751*10^18kg
Step-by-step explanation:
δ =619.09−0.000097p....equa1 where p (the distance from the center of the earth) is measured in meters and δ is measured in kilograms per cubic meter.
Calculating the density of air at 5km above earth surface
P = 5000m + 6370000m = 6.375*10^6m
δ = 619.09 -(.000097* 6.375*10^6)
δ = 0.715kg/m^3 = density
Since Mass = density*volume...equ2
To calculate volume of air around the spherical earth at height 5km
V = (4/3 pai R^3) - (4/3pai r^3) ...equation 3 where R =6.375*10^6m, r = 6.37*10^6
Substituting R and r in equation 2 to solve for volume of air
V = 1.085*10^21 - 1.08*10^21
V = 5.25*10^18m^3
Substituting δ and V into equation 2 to solve for mass of air
M = 0.715 * (5.25*10^18)
M = 3.751*10^18kg
Answer:
0.5
Step-by-step explanation:
