What is the discriminant of the quadratic equation 0=2x^2 + 3x -5? 0-37 -31 0 43 049​

Discriminant = b²-4ac

from 2x²+3x-5=0

a = 2 b = 3 and c = -5

Discriminant = 3² - 4(2)(-5)

= 9+40

= 49

Discriminant = 49

Ans = 49

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15