Round 639 to the nearest ten

Choose a rectangular room of which you will measure and make a scale drawing. What are the dimensions (length and width) of the room you chose, measured to the nearest half foot?

A bow is made from 2 2/3 yards of ribbon. Which expression gives the number of bows that can be made from 22 5/8 yards?

Tara ran 1,600 miles at a constant speed of 5 minutes and 20 seconds what was her speed?

The domain of y=cot x is given by x=npi

What is the value of y in the product of powers below? 8^3 8^-5 8^y = 8^-2=1/8^2

Jerry has two same size circles divided into same number of equal parts. One circle has 3/4 of the party shaded and the other has 2/3 of the part shaded. His sister says the least number of pieces each circle could be divided into is 7.

An alloy is composed of nickel, zinc, and copper in a5:4:8 ratio. How many kilograms of each metal are needed to make 3.4 kg of this alloy?

A scientist inoculates mice, one at a time, with a disease germ until he finds 2 that have contracted the disease. if the probability of contracting the disease is 1/6, what is the probability that 8 mice are required?

You want to buy some rice. A 7-ounce package costs 2.59. A 12 - ounce package costs $4.56. An 18-ounce package costs 6.30 which package is the Best Buy?

Kenya is reserving a room in a hotel in France where they use euros (€). The room charge is €75. Suppose the conversion rate is €1 = $1.298. What is the cost of the room in dollars? $57.78 $77.56 $97.35 $129.80