Answer:
$18
Step-by-step explanation:
a = 1, b = 3.
a + b = 4
a - b = -2 Adding to eliminate b:
2a = 2
a = 1
So 1 + b = 4
giving b = 3.
Answer:dis is hard hope u find an answer
Step-by-step explanation:N/A
Here is the answer 0.375
p=9h