pattydixon6
04.12.2020 •
Mathematics
Its math help!! please
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Ответ:
We are given the area of the path and pool combined, as well as the side lengths we would use to find that area.
So;
(8+2x)(20+2x)=1120
Now you would solve to find the value of x that makes this equation true.
You should get x=10
Let’s plug that back in and check if it equals the given number.
(8+2(10))(20+2(10))
(8+20)(20+20)
28x40
1120
Yes 1120 matches the value we are given.
So x=10
The width of the path is given to equal x, so the paths width is 10.
Ответ:
9. ans = -9
10. ans = -4.44