A 20 question multiple choice test is given to someone who randomly guesses at all 20 questions. If each question has four answer choices, what is the expected number the person will answer correctly? Answer values:

a. 0.191

b. 0.228

c. 0.772

d. 0.963

Which matrix multiplication is possible?

Asequence has its first term equal to 4, and each term of the sequence is obtained by adding 2 to the previous term. if f(n) represents the nth term of the sequence, which of the following recursive functions best defines this sequence? (1 point) f(1) = 2 and f(n) = f(n − 1) + 4; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2n; n > 1 f(1) = 2 and f(n) = f(n − 1) + 4n; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2; n > 1 i will award !

Rewrite so the subject can be y in the formula d=m-y/y+n