Joe, who is 12, has $8,000 in a bank account that pays a 6% annual interest rate. He wants to earn $2,000 in interest by the time he is 16. If he leaves
his money in this bank account, will he reach his goal?

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

acd, jgvjgbgbgvhgbhjjn

the answer is a) y= 2 csc [0.5 (x+pi/2)]-1

step-by-step explanation: