Answer:
Step-by-step explanation:
A. 7x + 52
Add your like terms (the numbers with variables and the numbers without)
B. 13x + 142
C. Put 8 in for x.
13(8) + 142 = 246 points
Answer:
38.5
Step-by-step explanation:
First do 77/2 then you get 38.5, if anything is wrong please tell me!!
Answer:
x = 7cm
Step-by-step explanation:

Divide 108 and 72 by twelve and you get 9 and 6 which all you have to do it multiply together
Answer:
S=32.5
W=97.5
Step-by-step explanation:
S=speed of plane in still air
W=speed of wind
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3(S+W)=130
6(S-W)=130
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S+W=43.33333...
S-W=21.66666...
2S=64.999...
S=32.5(simplified)
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32.5+W=130
W=97.5
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