To find the value of x, we need to use the fact that supplementary angles add up to 180 degrees.
So, we have:
128 + 5x = 180
5x = 180 - 128
5x = 52
x = 52/5
x = 10.4
Therefore, the value of x is 10.4.
consider the diagram of supplementary angles.
128˚ 5x˚
what is the value of x?
10.4
52
61.6
92
1 answer