If solution a contains 83% nitrogen and solution b contains 20% nitrogen. how much solution should be mixed in order to create 15 cups of a solution containing 62% nitrogen

If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.

Ineed to find the answer to number 2