Kelly orders t-shirts and sweaters from a clothing company she buys them at the prices of $659.00 for a t-shirt and $600.00 for a sweater the quantity is 100 for a t-shirt and 50 for a sweater how much does one sweater cost than one t-shirt?

To which sets of numbers does -12 belong? choose all answers that are correct. a) natural numbers b) integers c) real numbers d) irrational numbers

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.

Last week , donnell practiced the piano 3 hours longer than marcus . together, marcus and donnell practiced the piano 11 hours . for how many hours did each young man practiced the piano