stodd9503
11.03.2021 •
Mathematics
Twice the difference of a number and 7 is equal to three times the sum of the number and 8. Find the number. The number is
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Ответ:
464464=(2W-33)W
464464=2W^2-33W
2W^2-33W-464464=0
W=(33(+-)(3716801)^(1/2))/4
W=490.23in (approx)
L=2W-33=947.45in