you're trying to beat level two of your new video game on record time. on day one, it takes you 18 minutes to clear level 2. on Day 2, it takes you 40 minutes to clear level 2. what's the percent change?​

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Acircle has a circumference of 7.850 units. what is its radius?

72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.