There are 21 more students in a math class than in a history class. if the ratio of the students in the math class to the history class students is 10 : 3, how many students are in math class?

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike

Miranda is braiding her hair.then she will attach beads to the braid.she wants 1_3 of the beads to be red.if the greatest number of beads that will fit on the braid is 12,what other fractions could represent the part of the beads that are red?

Find the common ratio of the sequence. -4, 8, -16, 32, a: -12b: -2c: 12d: -1/-2