Solve for X

Please and thanks

Given:

The measure of ∠ABD is (4x + 15)°

The measure of ∠DBC is (13x + 7)°

We need to determine the value of x.

Value of x:

Since, we know the property that every angle in a rectangle is 90°

Hence, the value of x can be determined by adding the two angles and equating to  90°

Thus, we have;

Substituting the values, we have;

Thus, the value of x is 4.

-3.396 = -3.4

-0.708 = -0.7

0.304 = 0.3

0.955 = 1

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square