He assumes that 60-x and 2x-6 are vertical angles, so he equated these two expressions.
60-x=2x-6
60+6=2x+x
66=3x
x=22
Answer:
Step-by-step explanation:
143
or
121
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does any of this help
Answer:
471.24
Step-by-step explanation:
V=πr2h/3
radius = 5 and length = 18
answer = 471.24
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Answer:
P = 8w+10
Step-by-step explanation:
To find the dimensions, create an equation for its perimeter and solve. Recall, the perimeter formula for a rectangle is P = 2l+2w. The length is 5 inches shorter than triple its width so 3w-5. And the width is w.
P = 2l+2w
P = 2(3w-5) + 2w
P = 6w-10+2w
P=8w+10
Answer:
n = 80
Step-by-step explanation:
20= n/4
Multiply each side by 4
4 * 20 = n/4*4
80 = n