Line ad is a tangent to circle b at point c and m
what is the measure of
(the answer is 90 but how do you get this answer? )

Nneeedd 1.find the residual if you know the actual number is 5.2 and the predicted value is 4.8

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.