6. Ms. Quinones is flipping a penny. She flips the coin 15 times and gets head 8 of those times. Based
on this information, if Ms. Quinones flips the penny
60 times, how many heads could she be expected to
get?
A. 4
B. 8
C. 32
D. 28

C. 32

Step-by-step explanation:

15 × 4 = 60

8 × 4 = 32

The amount of heads she expected to get is 32

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

something over 10 so ? /10

step-by-step explanation: