X=5+y
x+y=-15
subsitute 5+y for x
5+y+y=-15
5+2y=-15
minus 5 from both sides
2y=-20
divide both sides by 2
y=-10
sub back
x=5+y
x=5-10
x=-5
the numbers are -10 and -5
Answer: decreased by 42%
Step-by-step explanation:
Answer:
28% decrease
Step-by-step explanation:
Percentage Decrease=
(Starting Value − Final Value) / Starting Value x 100
(850 - 612) / 850 x 100 = .28
Answer:
efe
Step-by-step explanation:
The midpoint is the average of the endpoint coords.
If (x,y) is F, then -6=(-14+x)/2 and 7=(13+y)/2.
-14+x=-12 so x=2, and 14=13+y, so y=1 and F is (2,1).
so the answer is (2,1)