What is the ratio of 35 and 15

What two criteria are needed for triangles to be similar

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is