U = {1, 2, 3, 4, 5, 6, 7, 8, 9} A = {2, 3, 5, 7} B = {1, 3, 5, 7, 9} A∪B = { } A∩B = { } (A∪B)C = { } A∩BC = { }

his chances of getting a coin of higher value is 4/19

step-by-step explanation:

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

step-by-step explanation:

what level of math? also i don't need to be paid if i can you.