What is the approximate side length of the square?

3.0 units
3.5 units
4.2 units
4.9 units

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.