Write an expression that cannot be simplified, and explain how you know that it cannot be simplified.

10. A bicycle trail in the shape of a circle has a diameter of 3 miles. Michelle biked around the trail 4 times. About how far did Michelle bike? A. 19 miles B. 28 miles C. 38 miles D. 113 miles

1. An empty bookcase has 6 shelves, and each shelf can hold no more than 50 books. You want to arrange 60 books in the bookcase so that the same number of books is on each shelf used. a. List the factors of 60. b.

What' the question.? A bag has 2 yellow cubes, 3 blue cubes and 1 white cube. The answer is 1/6.

Mercury is the closet planet to the Sun at a distance of 36 million miles. The closest star to the Sun is Proxima Centauri, which is 4.24 light years away. A light year is 5.9 * 1012 miles.

What if we had a square one side equaled 30 what did the other sides equal?

Sharon has some one dollar bills and som five dollar bills. She has 14 bills. The value of the bills are $30. Solve a system of equations using elimination to find how many of each kind of bill she has

What are the x and y-intercepts of the line described by this equation? - 6x+3y=18.9?

How to convert a standard number to scientific notation?

What is 4y+3x-10y+7x

there are 9000 four digit numbers. 4536 of the four digit numbers have no repeating digits. How many four digit numbers have at least one repeating digit?