What does 8.1 pi belong to other than irrational?

Kathryn bought 2.5 pounds of grapes at the Farmers Market. She paid 1.26 per pound. How much money did Kathryn spend in all?

1/2 X plus X - 15+1/2 X + 100 + X - 25 equals 540

A fish tank is 2 metres long, 50 centimetres wide and 20 centimetres high. How many litres of water will it hold if it is filled to the top?

A scientist calculated the mean and standard deviation of a data set to be Mu = 120 and Sigma = 9. She then found that she was missing one data value from the set.

The integers form 1 to 100 are randomly separated into two groups of 50 integers each. what is the probability that 37 and 89 are in the same group

A fisherman is setting up a net 6 feet below the surface of the water. Each foot of the water screens out 40% of the light coming from the surface.

1.5x-6.5 for x=9 what is the value given for x

The speed of train a is 6 mph slower than the speed of trainb. train a travels 200 miles in the same time it takes train b to travel 230 miles. find the speed of each train.

The equation of a circle is given below. (x + 7) + (y + 8) = 4/9 What is its center? What is its radius? If necessary, round your answer to two decimal places, units Show Calculator

45 cm is equivalent to how many inches