I don't know how to get X
2 answers:
Answer:
x=10
Step-by-step explanation:
P+S=140
(5x+30)+80=140
5x+30=80
5x=50
x=10
Answer:
6
Step-by-step explanation:
Sun of P and S = 140
Measure of S = 80
Measure of P = 5x + 30
5x + 30 + 80 = 140
5x + 110 = 140
5x = 140 - 110
5x = 30
x = 30 ÷ 5
x = 6
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Answer:
y = 2x -4
Step-by-step explanation:
-10x + 5y = -20
+10x +10x
5y = 10x -20
5 5 5
y = 2x - 4
Answer:
x = -4/3
Step-by-step explanation:
6x + 11 = -6x - 5
12x = -16
x = -4/3
Answer:
Distance = 7.6
Step-by-step explanation:
Answer:
Octagon
Step-by-step explanation:
180(n - 2) = 1080
n - 2 = 1080/180
n - 2 = 6
n = 8
=> Polygon with 8 sides
=> Octagon
A line that has a y-int. but no x-int. is a horizontal line, with slope m = 0.
