Answer:
the first one is right and other are wrong
Answer:
C
Step-by-step explanation:
Well she had 11.5 so subtract how much she has left witch is 5.25 so you get 6.25 = x
X-4y=-12
4x-y=12
eliminate y's
multily 2nd equaiton by -4 and add to top one
x-4y=-12
<u>-16x+4y=-48 +
</u>-15x+0y=-60
-15x=-60
divide both sides by -15
x=4
sub back
x-4y=-12
4-4y=-12
minus 4 both sides
-4y=-16
divide both sides by -4
y=4
x=4
y=4
(x,y)
(4,4)<u>
</u>
Answer:
awser 29
Step-by-step explanation:
`22
5 rows x 4 in each = 20 chairs in the classroom
