Acompany has developed a new power cell and wants to estimate its average lifetime. a random sample of 650 power cells is tested and the average lifetime of this sample is found to be 315 hours. the 315 hours is the value of a:

Tom is making a punch that contains 80% cranberry juice and the rest ginger ale. the punch has 2 liters of ginger ale. part a: write an equation using one variable that can be used to find the total number of liters of cranberry juice and ginger ale in the punch. define the variable used in the equation and solve the equation. hint: 0.8x represents the number of liters of cranberry juice in the punch. (5 points) part b: how many liters of cranberry juice are present in the punch? show your work.

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1