store sold combined totalof 412 biology and math books in a week. the number of biology textbooks sold was three times the number of math books sold. how many textbooks of each type were sold?

Which tens is 42 between?

What is the 50th term of the sequence that begins - 4, 2, 8, 14?

Write the expression as the sine, cosine, or tangent of an angle. sin 9x cos x - cos 9x sin x

Eight hundred thirty six thousand in standard form

An ordinary deck of 52 playing cards is randomly divided into 4 piles of 13 cards each. Let F be the event that the aces of spades and diamonds are in di↵erent piles, and E be the event that the aces of hearts, spades and diamonds are in di↵erent

Find the mean, median, and mode of the data. 67, 59, 34, 71, 59

Salma purchased a prepaid phone card for $15 Long distance calls cost 6 cents a minute using this card. Salma used her card only once to make a long distance call. If the remaining credit on her card is $13.14 how many minutes did her call last?

Is a negative plus positive is negative

A number increased by 29 is 40

What is the vertex of the quadratic functio f (x) = (x-6) (x+2) ?