Use the tape diagram to answer the following question: 8 is 40% of what number?

That is correct 8.25 multiplied by 7 is 57.75

Complementary angles: angles whose sum is 90 degrees.supplementary angles: angles whose sum is 180 degrees.straight angle: an angle that is worth 180 degrees. (can be a straight  line)right angle: an angle that is worth 90 degrees ( usually marked by a small box and is the angle in a rectangle and square)