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20cschultz
08.07.2020 •
Mathematics
The length of a rectangle is 3 inches more than three times the width. The perimeter is 62 inches. Find the length and width.
Length in
width. In
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Ответ:
length= 24 inches
width= 7 inches
Step-by-step explanation:
Start by writing down what you know.
width= w
length= 3w+3
Then, we can substitute into the perimeter of a rectangle equation, P=2l+2w.
62= 2(3w+3) + 2(w)
62=6w+6+2w
62=8w+6
56=8w
7=w
Now, plug this into our original equations for length and width:
width=7
length= 3(7)+3, so 24
Ответ:
So he came home with $20
£14.50+ £8.20= $22.70
Then 80-22.7= 57.30
57.30-22.70=34.6
So if he came home with $20 we do 34.60-20=$14.6
So his lunch was $14.6
Hope this helped and sorry if it’s wrong