Devin has 32 books to pack in boxes she packs eight books in each box. how many boxes does she need? write an equation using the letter n to stand for the unknown factor. explain. how to find the unknown factor

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?

There is a spinner with 14 equal areas, numbered 1 through 14. if the spinner is spun one time, what is the probability that the result is a multiple of 2 or a multiple of 5?

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?