1. If scores on an exam are normally distributed with a mean of 80% and a standard deviation of 10%, what would a score of 90% be in Z-scores (e. g., how many standard deviations is this score above or below the mean) ?

The stem and leaf plot shows the shoe sizes of 22 students in Mr. Millford's first period class. A stem and leaf plot. The stems are 6, 7, 8, 9, 10, 11. The first column of leaves are 0, 0, 5, 0, 0, 0.

Suppose that you want to compare the average cost of a gallon of milk to the average cost of a gallon of gasoline in the U.

If a = 7 and b = 2, find the value of a) a - b b) 2a + 3b c) 2ab d) (a - b) ?

How do you find the vertex of an function in vertex form?

Thomas wrote the expanded form of (5/2⁴) 5/2+5/2+5/2+5/2 below Which statement is true?

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.