Can someone please help it’s due in 15 minutes! Imagine is there.

Step-by-step explanation:

Remember that by the definition of angle bisector, the two resulting angles are equivalent to each other.

So, ∠CBD and ∠ABD are equivalent. In an equation:

Substitute them for their equations:

Solve for x. Add 23 to both sides:

Subtract 5x from both sides:

Divide both sides by 4:

So, the value of x is 9.

Now, to find ∠ABC, note that it is the sum of ∠CBD and ∠ABD. So:

Since we know the two angles are equivalent, we can substitute:

We can combine like terms:

Substitute ∠ABD for the equation. This gives us:

Substitute 9 for x. So:

Multiply:

Subtract:

Multiply:

And we're done!

2

step-by-step explanation:

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