(b) Show that if A is a square matrix of order n such that A3 = 0 then
(In - A) 1 = In+A+ A².​

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it. how many multiple-choice questions are on the test?

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base