What value is a permutation of n things taken r at a time divided by to get the combination of n things taken r at a time?

75 books represent 10% of total books at library 4.

Make a word that means "a unit of measurement one thousand meters."

Remove all perfect squares from the square root of 42a^4b^6

Sonya made a resolution to walk 2.5 kilometers a day. On Tuesday she walked 4 times around the running track at the local high school. The chart shows the length of a standard-sized pool and the distance around a standard-sized running track.

What patterns are there in the product of the square of a binomial?

What is the area of the triangle shown below? (units squared) Dimensions: 5, 5, 8

jennas mom is making hair bows for the basketball team. it takes 39 inches of ribbon to make each bow. how many yards of ribbon will she need to make 9 bows?

Mandy is setting up for a reception. For the number of seats needed, she knows she can use either 8 seats at each table with none leftover or 10 seats at each table with none left over. Which is the least number of seats she is setting up? A. 40 B.

Supposed the population of deer in a region was 3,500 in the year 2000. since then population has grown by 3.5% annually.

How are common denominators and common multiples the same