A teacher had 21 red pens. if the ratio of red pens to blue pens she owned was 3:1 how many pens did she have total?

Beverly made a deposit of $375 into her checking account. Then she withdrew $ 65. The next day, she wrote a check for $ 135. She had $475 before any of these transactions. How much money is in her account now?

A survey of adults found that 45% have used a multivitamin in the past 12 months. you randomly select 60 adults and ask them if they have used a multivitamin in the past 12 months.

What is 21.9375 rounded

Which of the following is equivalent to 16^3/4 a) 6 b) 8 c) 12 d) 64

9.684x√22√ : (987.56:π)

Which values of P and Q result in an equation with no soultions? 83x+P=83x+Q

The student council needs 2/3 of its members to vote favorably for a motion in order for it to pass. currently, 2/7 of the members are in favor of the motion.

What's 6 and 2/3 - 4 and 1/6. Six and Four are whole base numbers!

What would be the total area of a piece of land that was made up of three squares that each has a side length of 4x-2?

The area of a certain desert (Desert 1) is nine times the area of another desert (Desert 2). If the sum of their areas is 40,000,000 square miles, find the area of each desert.