Step-by-step explanation:
5x + 2y = 10
Ax + By = C
A = 5
B = 2
C = 10
The ratio of the circumference to the diameter is defined as pi
pi=circumference/diameter
that is how they got pi
in this question it woul be 15.7/5 which would be 3.14,
c=2pir
a=pir^2
c=2pir=16pi
divide both sides by 2pi
r=8
a=pir^2
a=pi8^2
a=pi64
a=64pi in²
Answer:
x=28
Step-by-step explanation:
x+24+100+x=180
x+124+x=180
2x+124=180
2x=180-124
2x=56
divide both side by number attached to the x
therefore x=28
Answer:
Mean = 70,000 dollars
SD = 800 dollars
For Khan Academy
Step-by-step explanation: