How can 28 over 6 be expressed as a decimal? 4.6 with bar over 6 4.7 with bar over 7 5.6 with bar over 6 5.7 with bar over 7

How do you solve a question like this?

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

Thee blue triangle has rotated from quadrant i to quadrant iii about the origin. describe the effects of the rotation on the coordinates of the blue triangle.