Answer:
Step-by-step explanation:

Answer: 90 degrees
============================
Explanation:
Let x and y be the two angles. Because they are supplementary angles, this means x+y = 180. Also since we're told that the angle is its own supplement, we can say that y = x.
Consequently, we can replace y with x and solve for x like so:
x+y = 180
x+x = 180 .... y is replaced with x since y = x
2x = 180
2x/2 = 180/2
x = 90
This means y = 90 as well. As a check, note how
x+y = 90+90 = 180
which verifies our answer.
Here's the method on the first one (36)
The ratio is

, hence if we call

the number below

, we will have

hence

I_72__I_36_I_24_I_12_I
<span>I_126_I_
63_I_42_I_21_I
</span>
Answer:
The slope of the line 4x – 5y = 12 is m = 4/5.
Step-by-step explanation:
To find the slope of this line we need to get the line into slope-intercept form (y = mx + b), which means we need to solve for y: The slope of the line 4x – 5y = 12 is m = 4/5.