Which shows the correct substitution of the values a, b, and c from the equation -2 = -x + x2 - 4 into the quadratic formula?
quadratic formula: x= bivb2-4ac
29
x==(-1) 3v – 132 – 4()
2(1)
x==13772-46-)
x==1=2(412-4-1)-2)
x==20170(-232- (a)=2)
26-1)
2(1)

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125

The function models the number of accidents per 50 million miles driven as a function

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years