You have 3 science books, 2 language books, and 4 philosophy books. In how many ways can they be arranged on the shelf if all books of the same subject are to be together?

41/17 as a decimal rounded to the nearest hundredth

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.