A teacher split 21 students into 3 reading groups. the same number of students was in each group. if each student in the first group read aloud for 6 minutes, how many total minutes did the students read aloud?

A sign on the side of a van is in the shape of a parallelogram. The area of the sign is 330 square inches. The base of the sign is 22 inches long What is the height of the sign?.

Nancy is 5 years younger than her brother stan. last year she was twice as young as he was. how old is each of them now?

Of 20 possible books, you plan to take 6 with you on vacation. How many different collections of 6 books can you take?

1 1/2 divided by 1/16

You saved $10,943.89 in an emergency fund. One fourth is in a regular savings account at a 3.5% APR, and the remainder is in a 30-day CD at a 4.57% APR.

The temperature in your town is 31 degrees Fahrenheit. The radio announcer says that the temperature will drop 15 degrees. What will the temperature be?

If the numerator of a fraction is larger than the denominator of the fraction, than it is greater than 1

Part 1: what are the conditions for using the standard deviation formula when conducting a significance test? be specific about p versus p-hat. part 2: what are the conditions for approximating with a normal distribution?'

If the length of one leg of a right triangle is 16 and the length of the hypotenuse is 2 more than the length of the other leg, what are the lengths of all the sides of the triangle?

2. 3 times the sum of a number x and 13