Tamara wants to calculate the height of a tree outside her home. Using her clinometer, she measures the slope angle from 8 feet away from the base of the tree and gets and angle of 40 degrees. If Tamara’s eye level is 5 feet above the ground, how tall is the tree(rounded to the nearest tenth of a foot)?

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

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.

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?