Solve this quadratic equation using the quadratic formula. 2x2 - 10x + 7 = 0

Step-by-step explanation:

2x^2-10x+7         A=1, B=-10. C=7

-(-10)±√-10^2-4(1)(7)

2(1)

10±√100-28

2

10±√72

2

10±8.485281374

         2

10+8.485281374 =9.24

             2

10-8.485281374 =0.76

          2

x= 5/ 2 + 1/2  √11

or  x= 5/ 2 + −1/ 2 √11

Step-by-step explanation:

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

55? i think maybe

step-by-step explanation: