A play has 7 people with all different ages: 10,10,12,14,22,13 and 24. What is the median age of participants in the play

median= 13

Step-by-step explanation:

line up from least to greatest

10,10,12,13,14,22,24

eliminate the first and last number

10,12,13,14,22

eliminate the first and last number

12,13,14

eliminate the first and last number

13

13 is the answer

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