Jared bought a package of pens containing 20 pen. If 3/4 had black ink exactly how many pens have black ink

3x-2+x+8=1/2 (9x+7-x+5)

How can you figure out what 4/7 divided by 8/15 is

Q7 Calculate the volume of a sphere with diameter of 4.2mm.

What is the quotient of - 28 and - 7?

What is 143/8 written in mixed numbers

There were four beagles and three golden retrievers what's the part to part ratio

a pile of 12 books is 1.2 meter thick 9 of them are 9.5 centimeters thick each and the rest are of equal thickness. for the rest of the books, how thick is each of them in centimeter?

How do you factor 15y^2+16y-15

4a - 18=6a+4 what is a

What is the greatest common factor of 6x^4 + 24x^3 - 72x^2?