Answer:
Two solutions (-4,-7) and (4,7)
Step-by-step explanation:
x = y + 3
x*y = 28
(y+3)*y=28
y^2+3y-28=0
(y+7)(y-4)=0
y=-7, y=4
x=-4, x=7
Answer:2+2=4 ..2+2=tree
Step-by-step explanation:
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The distance from point Q to point A is 1.25
The distance from point A to point A' is 1.25
The distance from point Q to point A' is 2.50. This is twice the distance from point Q to point A.
The scale factor is 2.
1.25 + 1.25 = 2.50
2.50 / 1.25 = 2
Answer:
A, (-3,0)
Step-by-step explanation:
Just plug that one in and it works out.
5*-3+2*0= -15
2*-3-2*0= -6
The equations would be:
x=18+3y
x+y=54
(substitute x in the second equation with 18+3y)
18+3y+y=54
(combine like terms and solve for y)
y=9
(plug y into the second equation to find x)
x+9=54
x=45
