What is the value of the discriminant for the quadratic equation –3 = –x2 + 2x?

discriminant = b2 – 4ac

a. –8
b. 4
c. 8
d. 16

blue marble is 15 times out of 50 = 15/50 reduces to 3/10

landing on tails is 24 out of 50 = 24/50 reduces to 12/25

to find the probability of both multiply together:

3/10 x 12/25 = 3 x 12 / 10 x 25 = 36/250

if you multiplied the numerator and denominator by 10 you get 360/2500.

the answer is 360/2500

people went from manufacturing one object at a time by hand to manufacturing many objects in factories