This set of ordered pairs associates a number with a polygon that has that number of sides:
{(3, isosceles triangle), (3, equilateral triangle),(3, right triangle), (3, scalene triangle),(4, square), (4, rectangle), (4, rhombus),(4, trapezoid), (4, parallelogram),(5, pentagon), (6, hexagon)}
a) Does the set of ordered pairs represent a function? Explain.
b) Suppose the elements in the ordered pairs were reversed. Use the association “has this number of sides.” Would the new relation be a function? Explain.
c) Identify the domain and range of each relation in parts a and b.

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.

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20