The radius, i think, I'm not 100% sure what you're asking
Answer:
$12
Step-by-step explanation:
The mark up was 12 dollars because 32-20=12
Answer:
Step-by-step explanation:
The key to this question is that the length of a side of a triangle is larger than the difference of the other 2 sides and is smaller than the sum of the other 2 sides. Hence the length of AC is larger than (or equal to, in case A, C, D do not form a triangle but are on the same line) 
and is smaller than (or equal to) 
.
The slope of a line parallel to another line are equal, and the slope of a line and a perpendicualr line is the reciprocal. So, a line parallel to y = -1/2x + 6 that goes through (4,10) will have an equation of y = -1/2x + 10 (slope is the same and y-intercept changed). The line perpendicular would have an equation that looks like this: y = 2x + 10 (the slope is the reciprocal of the original slope).
