in car parkthe ratio of white car to black is 2:7. The ratio of white car to red car is 3:11. Altoher there are 343 white, red and black cars. How many black cars are there.

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aleah1616

22.01.2023

Mathematics

The given 0 = x + 2 + x2 can and should be re-written as 0 = 1x^2 + 1x + 2. thus, a=1, b=1 and c=2. the discriminant is b^2-4ac, or 1^2-4(1)(2), or1-8=-7.because the discriminant is negative we have two complex roots.

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