3√3(3+2√6-√33)
2√18-3√80-5√147+5√245-3√98

Find the value of the cosine for angle a

What is the value of f(x) = 2.2 for f(-2)?

Atest consists of 10 multiple choice questions, each with 5 possible answers, one of which is correct. to pass the test a student must get 60% or better on the test. if a student randomly guesses, what is the probability that the student will pass the test?