valdezavery1373
18.12.2020 •
Mathematics
HELP ME PLEASEEEEEEE
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Ответ:
I had the same issue.
Step-by-step explanation:
Here is the actual equation.
A=1/2(6)(7+7)
A=1/2(6)(14)
A=(3)(7)
A=21cm^2
He messed up on line 3 by multiplying 1/2 to both numbers. It should be A=(3)(14) and he would have gotten 42.