Answer:
92
Step-by-step explanation:
angle a and b add up to 180 degrees
4x-20+2x+8=180
add like terms
6x+12=180
x=28
then substitute to get 92
Answer:
17 centimetres
Step-by-step explanation:
16 + 1 = 17
Molly's mouse = 16 cm
Joy's mouse = 1 cm longer than Molly's mouse
Joy's mouse = 16 + 1 = 17 cm
Answer:
Here
Step-by-step explanation:
length = x
width = 2x - 3
Perimeter = 2length + 2 width
2x + 2(2x - 3) = 42
2x + 4x - 6 =42
6x - 6 = 42
Add 6 to both sides
6x = 48
Divide both sides by 6
x = 8
Length = 8 inches
Width = 2(8) - 3 = 16-3 = 13 inches
The equipment of a straight line is 7
9n - 2 - 6n - 3
(9n + -6n) + (-2+-3)
=3n -5
