Evaluate the given expression for x= -13
-7x-5
the answer is

86

Step-by-step explanation:

Substitute the value of the variable into the equation and simplify.

When X=-13

-7 times -13 which is positive 91

we have 91-5 left

subtract 5 which is 86

Glad I could help!!

x= -9/4

x=−13−7x−5

x=−13+−7x+−5

x=(−7x)+(−13+−5)(Combine Like Terms)

x=−7x+−18

x=−7x−18

add 7 to both sides.

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4