On the shelves of Maria's bookcase, 1/2 of the books are mysteries, 1/10 are science fiction, 1/5 are biographies, and the remaining 4 are classics. How many books are in her bookcase?

How do know how many protons are in a atom

Write three expressions that are equivalent to 24a+20

What are the next two terms after 1, 4, 6, 24, 26

Rae planted a square garden that covers an area of 200 ft.² how many feet of fencing does he need to surround the garden

Joseph tweets 13 times a day. Define each variable and write an algebraic expression to describe the number of posts after any given number of days

Where do martians leave thier spaceships

How to find the zeros of f (x) = - 2x^2+8x

The sum of the measures of two exterior angles is 252. what is the measure of the third exterior angle?

Martin finds a shirt on sale for 10% off at a department store. The original price was 20$. Martin must also pay 8.5% sales tax. How much is the shirt before taxes are applied? How much is the shirt after tax is applied?

Jason eats 10 ounces of candy in 5 days how many pounds will he eat per day recall 16 ounces equals 1 pound