Tyler used 1 1/4 gallons of paint to paint 5/7 of a fence. how many gallons will it take to paint the whole fence? explain or show your reasoning.

For this case we have missing of fence to be painted.

To paint of fence we used:

gallons of paint. So, we make a rule of three:

Where the variable "x" represents the gallons of paint needed to paint the missing fence

Thus, 0.5 gallons of paint is missing for the missing fence.

Answer

0.5 gallons

i got 142 as my answer

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