Thomas purchased a bundle of 8 feet boards for a home project. The bed of his truck is approximated 70 inches long and 80 inches wide. He cannot drive with his tailgate down, what is the best way for him to put his boards in? Why? Support with mathematics. Include an illustration?

answer: 1, 3 and 5 are correct

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

it's possible to build a triangle with side lengths of 3, 3, and 9.- true ( b.)