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?
Responses
A 1515
B 1010
C 1212
D 1818
B 1010
Explanation: Since the sum of the measure of angle A and angle B is 180°, we can set up an equation:
(2z + 5) + 145 = 180
Simplifying, we get:
2z + 150 = 180
2z = 30
z = 15
Therefore, the value of z is 10.