Let length=x, witdth=x-9
Perimeter=130
2 length+2 width=130
2x+2(x-9)=130
2x+2x-18=130
4x=130+18
4x=148
X=37 cm
Length=37cm; width=37-9=28cm
Hope this can help.
Answer:
B
Step-by-step explanation:
Answer:
n=-5
Step-by-step explanation:
6n+4=-26
=>6n=-26-4
=>6n=-30
=>n= -30/6
=>n=-5
Answer:
A
Step-by-step explanation:
Hope it will help you......
Answer:
90°
Step-by-step explanation:
note that
simplifies to 
There are 360° in one turn of the circle , then
× 360° = 360° ÷ 4 = 90°