she uses 2/3 cup of sugar to make 1/4 sheet cake. how much sugar would she need to make a full sheet cake?

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?