Timed test
which of the following nets will make a tetrahedron?
image 1,2,3, or 4

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?

In a school 2/3 of the students study a language of those who study a language 2/5 study french

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.