QUICK I NEED AN ANSWER NOW: WHAT IS 2 2/3 x 8

64/3 simplified is 21 1 /3

Step-by-step explanation:

first  you have to convert the mixed fraction into improper fraction to multiply so 2 2/3 will become 8/3 and now 8 as a fraction is 8/1 so all you have to do is multiply 8 * 8 is 64 and 3 * 1 is 3 so the answer would be 64/3 and you just simplify the fraction for it to become 21 1/3

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