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19.11.2020 •
Mathematics
From the set {5, 7, 40}, use substitution to determine which value of x makes the equation true.
7(x + 35) = 280
A. 7
B. none of these
C. 40
D. 5
Please help me
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Ответ:
D. 5
Step-by-step explanation:
7 (x + 35) = 280
x + 35 = 280/7
= 40
x = 40 - 35
= 5
So it the correct option is D. Sorry I am late!!
Ответ:
If she gave away 7/8, that is 24/1(7/8)=21 given away.
So she has 24-21=3 left.