The ocean covers 71% of the earth's surface. if the total surface area of the earth is about 510 million square kilometers, how many square kilometers are covered by the ocean?

The area of a quarter's face is 4.64 cm2. The amount of space that it occupies is 0.60 cm3. Approximately how thick is a quarter? Round to the nearest hundredth. (Use 3.14 for π.)

A plain travels 3400 miles in 8 hours. How far will it travel in 6 hours at this rate

One saturday at the farmers market each of the 94 vendors made 502 dollars in profit how much profit did all vendors make that saturday

The variables x and y are related proportionally. When x=12, y=8. Find x then y=12.

Find the percent of each number 90% of 27

Which two ratios form a proportion?

There were 149 angelfish and goldfish in an aquarium. There were twice as many guppies as angelfish. After selling 35 goldfish, there are half as many goldfish as angelfish. How many fish are left in the aquarium?

Which statement can be concluded using the true statements? If a quadrilateral has 4 equal sides and 4 equal angles, then it is a square. If a figure is a square, then each of its angles must measure 90 degrees

Maxine works at an amusement park. She recorded the number of ice cream cones sold each day, along with the high temperature in fahrenheit degrees. Usinger her data, she wrote a linear regression equation of y=9x-487.

Running consumes about 720 calories per hour about how many are used if you run for 40 minutes