1. the number of calories burned at the gym is normally distributed with a mean of 425 and a
standard deviation of 51. find the z-scores for each data value.
a) 268
b) 512
c) 450

Simplify (4x^2 - 8xy + 2y^2) - (9x^2 - 4xy - 7y^2) a. -5x^2 + 4xy + 9y^2 b. -5x^2 - 4xy + 9y^2 c. -5x^2 + 12xy + 4y^2 d. -5x^2 - 4xy - 5y^2

Maryann’s friends loved her bulletin board, and 4 of them asked her to make one for their homes. she offered to make each of her friends a replica of her bulletin board that measures 2 meters by 3 meters. how many kilograms of burlap should maryann collect to complete the bulletin boards for her friends? maryann should collect kg of burlap.

Anna is saving to buy a new cell phone. her mother is anna by contributing money each month. what is the ratio between the amount of money contributed by anna and the amount contributed by her mother? what was the total amount saved in april?