You must make a triangle using 3 pieces of wood, and the two pieces of woods are 4 ft
and 7 ft long. What is the range of the third
possible side?

7 foot i think

Step-by-step explanation: bottom is 4 foot side is 7 foot that means other side is 7 foot

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

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