There are six teachers in a room, ages, 40, 50, 45, 55, and 65. if a 29 year old teacher enters the room, how will the mean age and standard deviation be affected?

Use the graph of the sine function y=2sinθ shown below

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

Tommy buys a sweater that is on sale for 40% off the original price. the expression p -0.4p can be used to find the sale price of the sweater, where p is the original price of the sweater. if the original price of the sweater is 50, what is the sale price?