students' scores on an anthropology test have a mean of 31 with a standard deviation of 3.5 if rochelle scores 20 on her test, how many standard deviations away from the mean is her score

What is 2a/3 + 1/5=7/6 for a equation? what does a represent?

Yuan receives money from his relatives every year on his birthday. This year, Yuan received a total of $56. That is 12% more than he received last year. How much did Yuan received last year?

Jill earned $40 from a carpool plus $9 per hour (h) babysitting this week. Which of the following expressions best represents Jill's income for the week? 9 + 40h 9 + h + 40 9h + 40 9 + 40

2x (x+3y) - 5y (4x-3) + 2 x y

Given any triangle abc with corresponding side lengths a, b, and c, the law of cosin states

How are common denominators and common multiples the same

What number increased by one half is equal to negative three eighths?

Lauren has already jarred 17 liter of jam and will jar an additional 1 liter of jam every day. How much jam did Lauren jar if she spent 8 days making jam

A cone has a diameter of 6 centimeters and a height that is 3 times the diameter. Using 3.14 for pi, which of the following can be used to calculate the volume of the cone? one over three (3.14) (3cm) 2 (18cm) one over three (3.

The stadium owner is considering an offer from Reliable Tools to change the name to Reliable Stadium. The company is offering to pay $750,000 per year.