Acertain typing agency employs 2 typists. the average number of errors per article is 3 when typed by the first typist and 4.2 when typed by the second. if your article is equally likely to be typed by either typist, approximate the probability that it will have no errors.

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −

Astudent was asked to find the square of 7x+3. the student quickly wrote (7x+3)^3= 49x^2+9. identify the student's error and provide the correct answer.

What is the y-intercept of the line with the equation 3x + 4y = 12?