For two adjacent angles with measures x° and (×+30)° that make up a 90° angle, what is x?
To find x, we can use the fact that the sum of the measures of two adjacent angles that form a straight line is 180°. In this case, the two adjacent angles make up a 90° angle, so their measures add up to 90°.
Therefore, we have the equation:
x + (x + 30) = 90
Simplifying the equation, we get:
2x + 30 = 90
Subtracting 30 from both sides:
2x = 60
Dividing both sides by 2:
x = 30
So x is equal to 30°.