The sum of the measure of angle A and angle B is 180°.
The measure of angle A is (2z + 5)°.
The measure of angle B is 145°.
What is the value of z?
Since the sum of angle A and angle B is 180°, we can write the equation:
(2z + 5) + 145 = 180
Now we solve for z:
2z + 150 = 180
2z = 30
z = 15
Therefore, the value of z is 15.