The answer will be x= 12.4
4a-9b=22
substitute b=-2
4a -9(-2) = 22
4a +18 =22
subtract 18 from each side
4a = 4
divide by 4
a =1
Choice C
Answer:
A fraction bar labeled 1. Under the 1 are 2 boxes containing one-half. Under the 2 boxes are 4 boxes containing one-fourth. 2 one-fourths are circled.
Step-by-step explanation:
Answer:
no it does not have an inverse. because the determinate is 0 and you can't find the inverse of 0
