kevin2920
20.10.2020 •
Mathematics
Mitchell needs to buy some wood to build a rectangular box that is 12 inches long, 8 inches wide, and 10 inches high. A net of the box is shown. How many square inches of wood would Mitchel need to build the box
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Ответ:
see the attachment
Step-by-step explanation:
It helps to follow along the proof and consider how you get from here to there.
In the 5th line, we have a sum in symbols.
In the 7th line, we have an expression with a number on the right side, and a statement that says we got there by subtraction.
Then we expect line 6 to have a sum with numbers whose difference is 40°. (That eliminates the 3rd and 4th choices.)
The way you get from an expression with symbols to an expression with numbers is to make a substitution of numbers for symbols. Hence the appropriate choice is the one shown below.