15% of the students in mrs. madison’s math classes have an ‘a’. if 18 students have an ‘a’, how many students are in mrs. madison’s math classes? [type your answer as a number.]

The constant of proportionality is always the where k is the constant of proportionality. additionally, you can find the constant of proportionality by finding the ratio for any point onasap

Lucy and donavan measured the length of the school garden. lucys measurement is 11.3m and donavans measurement is 113 cm. could both be correct? explain

Two numbers have a sum of -19. one number is x. what expression represents the other number?