What are all of the real roots of the following polynomial? f(x) = x4 - 13x2 + 36 a. -3, -1, 1, and 3 b. -2 and 2 c. -3, -2, 2, and 3 d. -3 and 3

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.

In priyas math class there are 10 boys and 15 girls. what is the ratio of boys to girls in priyas math class? express your answer as a decimal

What is the slope of the line that passes through the points (–9, 2) and (0, 4)? the slope of the line is