Multiply and simplify. 70/63 x 21/15

Math it's appreciated. (picture provided)

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that

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°