In a library, 13 out of 65 books on a bookshelf are non-fiction. If the library has 4,000 books total, how many of those are non-fiction? (use rule of four)

What is the slope of the perpendicular line to 8x - 3y = - 9

Jodi purchased a 32 fluid ounce container of vegetable oil. the bottle is currently 3/8 full. A) how fluid ounces does Jodi have left and b) how many fluid ounces has Jodi used?

Find the total surface area of the following pyramids: A regular square pyramid has a height of 4 and a base with area 36.

How do i factorise this equation a²+7a+12

What is the value of z if x=4 and y=9

how can you determine which of the three numbers is the hypotenuse once the hypotenuse is identified then doe it matter which length you substitute for the a and b in a^2+b^2=c^2 justify your answer

Write each phrase as an algebraic expression 65 less than j

Find the area of a rectangle if the perimeter is equal to 38 in and the length is 10. 28 18 90 45

There are 227 performers in the Children's Parade. The performers are arranged in rows with 8 performers in each row. How many rows are needed for all the performers? Explain your answer

The ratio of boys to girls in mr. chen's class is 4 to5. which of the following cannot be the total number of students in mr. chen's class