Answer:
0.81
Step-by-step explanation:8x1x1x 1/10 +1x1/100=0.81
1. Multiply both sides by 4x-1

2.Simplify

3.Multiply both sides by 7
4x-1=3x7
4.Simplify 3*7 to 21
4x-1=21
5. Add one to both sides
4x=21+1
6. Simplify 21+1 to 22
4x=22
7.Divide both sides by 4
x=
8.Simplify

to
Rate is miles/gallons
132/11=12 mile pser 1 galon
ratio and propeortion
132/11=252/xgalons
12/1=252/x
multiply both sides by x
12x=252
divide both sides by 12
x=21
21 gallons
Last choice the area becomes 25 times greater
Answer:
The equation is 3x + 24 = 6x
Step-by-step explanation:
Let
Zach's age = x
If Zach added 8 to his age and multiplied this sum by 3.
Zach = 3(x + 8)
= 3x + 24
James = 6x
Zach's age = James's age
3x + 24 = 6x
Collect like terms
24 = 6x - 3x
24 = 3x
Divide both sides by 3
x = 24/3
= 8
x = 8
Check
Zach = 3(x + 8)
= 3(8+8)
= 3(16)
= 48 years
James = 6x
= 6(8)
= 48 years
The equation is 3x + 24 = 6x