Answer Choice: (A) 0 (B) 1/10 (C) 1/2 (D) 1

100%

Step-by-step explanation:

well you see the spinner is divided like this

unshaded areas are for odd numbers

and shaded areas are for even numbers

so

the arrows need to point to a unshaded area (an odd number) or an even number

so that's 100% because the whole spinner is made of even and odd numbers

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