Answer:
7
Step-by-step explanation:
The two angles + 90 degrees equals 180 degrees
So it is sufficient to say that the two angles equals 90 degrees
6r - 7 + 55 = 90
6r + 48 = 90
6r = 42
r = 7
y= -1x-6
The equation would be y=mx+b
M= slope, and B=y-intercept
If you look at a graph and use the slope to get to the Y-intercept you'll see that it is -6, and so you would just plug that into the equation along with the slope :)
60,000/ -30,000 (read explanation)
8% of 10,000 is 800, 800 x 50(years) = 40,000, 100,000 -40,000 = 60,000, I believe you meant 100,000, cause if not, the answer is -30,000
Hope this helped