Answer:
m = 20
Explanation:
You want the value of m when (4m +10)° represents an angle of 90°.
Equation
The perpendicular bisector XZ intersects segment WY at right angles. The measure of a right angle is 90°, so we have ...
(4m +10)° = 90°
Solution
Dividing by ° and subtracting 10 gives ...
4m +10 = 90
4m = 80
m = 20 . . . . . . divide by 4
The value of m is 20.
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