Points P, Q, R, and S are on a number line, as shown.

The ratio of lengths PR: QS is

(A) 7:12

(B) 10:17

(C) 1:1

(D) 5:12

(E) 7:17

 

Problem 7. (6 points) A multiple-choice test is constructed so that each problem has five possible answers, exactly one of which is correct. Joe Bozo always guesses on multiple choice tests, so the probability he gets any particular problem correct is 1/5 -0.2. (b) Now suppose Joe takes a test with 75 multiple choice problems on it. Let X be the number of problems he gets correct. Find the mean and standard deviation for X.

Please could you assist with the following Math Questions, Would be much appreciated.

which of the following describes the roots of the polynomial function f(x)=(x-3)^4(x-6)^2?

A.  –3 with multiplicity 2 and 6 with multiplicity 4
B.  –3 with multiplicity 4 and 6 with multiplicity 2
C.  3 with multiplicity 2 and –6 with multiplicity 4
D.  3 with multiplicity 4 and 6 with multiplicity 2