About what percent is oxygen than silicon on the earths crust

Suppose that, in 2006, Poland produced 4.02 million bikes. The total world production that year totaled 142 million bikes.

4. The sum of iwo numbers is 36. Twice the first number minus the second is 6. Find the numbers.

Mike used 27 nails to build a chair. he used 14 more nails to build a table than he used to build the chair. How many nails did Mike use to build the table? use any strategy to solve

9x - (6*-1) = 2 solve using addition and multiplication

Which of the following is NOT true about the following equation? y=-5 It is perpendicular to the equation y=15x-3. Its slope is zero. The line does not cross the x-axis. It is the equation of a horizontal line.

Solve: 8+4/5 (15+2x) = -12 What should we do first? Finish solving it and what do you get for x? 1. - 20 2. 5 3. - 2

382.993 rounded to the nearest hundredth?

Their sum is 7, and their product is 15

Which expression has the same value as - 18: (-9) -18:2 -12: (-3) -10:5 -8: (-4)

Jim uses ribbon for bookmarks. Jim has 9 feet of ribbon. He uses 1/3 foot of ribbon to make each bookmark. What is the total number of ribbons Jim can make from 9 feet of ribbon?