For two adjacent angles with measures x° and (x+30)° that make up a 90° angle, what is x?(1 point)
Responses
A. 20
20
B. 30
30
C. 15
15
D. 60
To find the value of x, we can use the fact that the sum of the measures of two adjacent angles that form a straight line (180°) is 180°. Since the two angles in question make up a 90° angle, their measures should add up to 90°.
Therefore, we can write the equation:
x + (x + 30) = 90
Simplifying the equation, we get:
2x + 30 = 90
Subtracting 30 from both sides, we have:
2x = 60
Dividing both sides by 2, we get:
x = 30
Therefore, the value of x is 30°.