davis17
davis17
19-05-2018
Mathematics
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Аноним
Аноним
19-05-2018
They used 8 gallons in travelling 175 miles
average miles / gallon = 175/8 = 21.88
x^2 - 8x - 13 = 0
(x - 4)^2 - 16 = 13
(x- 4)^2 = 29
x - 4 = +/- sqrt29
x = 4 + sqrt29 and 4 - sqrt29
Its A
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