Determine whether each sequence is arithmetic, geometric or neither. a) 0,5, 10, 15, 20,...
b) 64, 48, 36,27,...
c) 1,4, 16, 32...
d) 2,8, 14, 29,...
e) -20, -15, -10,-5,...​

step-by-step explanation:

it will be a cylinder. with a diameter of 8 and 4 single pieces high

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