Combine and simplify these radicals √8 x √20. 4√10 160 10√4 40

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?

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

What is the value of x in the diagram below?