Answer:
The value of r=
The value of x=
Step-by-step explanation:
Given that,
A) 
Now,

8(2r-2)=9(7r+10)
16r-16=63r+90
-16-90=63r-16r
-(16+90)=47r
-106=47r
r=
B) 
Now,

5(x+5)=9[3(x-2)-1]
5x+25=9[3x-6-1]
5x+25=9[3x-7]
5x+25=27x-63
25+63=27x+5x
83=32x
x=
Answer:
720
Step-by-step explanation:
6 x 120=720
Every 1 cm=120 km
So multiply both sides by 6 and you get
6 cm= 720 km
Answer:
england
Step-by-step explanation:
No. Quincy should have used the trend line to find the corresponding x value when y=80.
Answer:
Volume of the sphere up to two decimal places=
cubic yards
Surface area of the sphere up to two decimal places
square yards
Step-by-step explanation:
Given:
The radius of the sphere= 1 yard
Volume of a Sphere:
:

cubic yards
Volume of the sphere up to two decimal places=
cubic yards
Surface area of the sphere= 

Surface area of the sphere up to two decimal places
square yards