Two adjacent angles are on a straight line. One angle has a measure of (5x−28)° and the other angle has a measure of (8x)° . What is the measure of the second angle?(1 point)
The sum of two adjacent angles on a straight line is 180 degrees. Therefore, we have the equation:
(5x - 28)° + (8x)° = 180°
Combine like terms:
13x - 28 = 180
Add 28 to both sides of the equation:
13x = 208
Divide both sides by 13:
x = 16
Now, substitute the value of x back into the equation for the second angle:
8x = 8(16) = 128
Therefore, the measure of the second angle is 128 degrees. Answer: \boxed{128}.