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 18
To find the value of z, we need to set up an equation using the given information.
The sum of the measures of angles A and B is 180°, so we can write the equation as: (2z + 5) + 145 = 180.
Now, we can solve this equation:
(2z + 5) + 145 = 180
2z + 150 = 180
2z = 180 - 150
2z = 30
z = 30/2
z = 15
Therefore, the value of z is 15.
Answer: D) 18