Riley wants to make 100 mL of a 25% saline solution but only has access to 12% and 38% saline mixtures. Which of the following system of equations correctly describes this situation if x represents the amount of the 12% solution used, and y represents the amount of the 38% solution used?

Which of the following statements is not true? a.parallel lines are lines in the same plane that never intersect. b.congruent figures have the same shape and same size angles and sides. c.similar figures must have the same shape and the same size. d.a rotation is when you turn a figure around a certain point.

To which set of numbers does the number –5 belong? select all that apply. integers natural numbers rational numbers real numbers whole numbers

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers