Calculate the discriminant: 5x² + 2x − 2 = 0

44

Step-by-step explanation:

The equation is of the form  a x ²+bx +c = 0 where

a = 5, b= -2, c= -2

The Discriminant is given by:

Δ= b²− 4  * a  *  c

=  (−2²)−  ( 4  *  5  *  ( −  2 ) )

=  4 +  40

= 44

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

360 different combinations