An architect planned to construct two similar stone pyramid structures in a park. The picture shows the front view of the pyramids in her plan, but there is an error in the dimensions.

Which of the following changes should she make to the length of side CB to correct her error?

A. Change the length of side CB to 13 feet

B. Change the length of side CB to 8.5 feet

C. Change the length to side CB to 8 feet

D. Change the length of side CB to 11 feet

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.

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

Ineed with number 6 , explain how to get 1978