Solve the equation by using the quadratic formula. 8x^2 -2x -15 = 0
a.
Three-halves, five-fourths
b.
Three-halves, negative five-fourths
c.
Negative three-halves, five-fourths
d.
Negative three-halves, negative five-fourths

Which of the following system of equation is not equal to the system of equations is not equal to the system of equations shown below

After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? check all that apply. a. 9% + 3x2 = 14 + x-1 b. -x+ + 4x + 7 = -32-9 c. 5x + 4 = 3x4 - 2 d. 2x2 + x2 + x = 30

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?