B - 3A = 2
3B - 6A = 12
(2)B - (6)A =4
3B - 6A = 12
Subtract
-B = -8
B = 8
Plugin 8 for B
8 - 3A = 2
8 = 3A + 2
6 = 3A
2 = A
(Double checking)
3(8) - 6A = 12
-6A = 12-24 = -12
- 6A = -12
Divide by -6
A= 2
It works
A = 2. B = 8. Hope this helps
Answer:
8
Step-by-step explanation:
Step 1: Add 19 to both side
b-19+19=-11+19
b=8
Hope I helped:D
Answer:
$0.50
Solution:
First lets find how many cookies there are:
2.5*12= 30 cookies
Then we divide cost by cookie to see how much a cookie costs
$15/30 = $0.50
D=24 r=12
A=π×r^2
A=π×12^2
A=452
452÷4=113
Joe are 113 inches squared
