Find the probability of each event. Answer IN FRACTION form.

A mechanic working under a car requires four different size wrenches from his
toolbox, which contains eleven different wrenches. Reaching for his toolbox, he grabs four of them at random. What is the probability that the mechanic has all of the wrenches he needs?

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

The given dot plot represents the average daily temperatures, in degrees fahrenheit, recorded in a town during the first 15 days of september. if the dot plot is converted to a box plot, the first quartile would be drawn at __ , and the third quartile would be drawn at __ link to graph: .

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.