Need help on this one

The value of x is 21 ft.

Solution:

The given image is a triangle.

In ΔABC, GH is the mid-segment.

Given GB = 21 ft and AG = x ft

To find the value of x:

Since GH is the mid-segment of triangle ABC,

G is the mid point of the line segment AB.

By mid point definition,

AG = GB

AG = 21 ft

x = 21 ft

Option B is the correct answer.

The value of x is 21 ft.

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116