Answer: m angle3 = 3x - 7 = 3(14) - 7 = 37 degrees
Explanation:
Since angles 3 and 9 are complementary, their measures add up to 90 degrees. So, we can set up the equation:
m angle3 + m angle9 = 90
We can substitute in the given values for the measures of each angle:
(3x - 7) + (4x - 1) = 90
Solving for x:
7x - 8 = 90
7x = 98
x = 14