Which expression represents 9 less than a number?

9n

n - 9

9 - n

n - 9n

Simplify. 7.8 + 3.9 asap

David is packing bundles of 3 inch by 5 inch cards, face up, into a square box. He places the cards side by side so that there is no wasted space. Find the smallest measure for the edge of the box.

A tortoise is walking in the desert. It takes 5 minutes to walk 62.5 meters. What is its speed?

Which property of addition is used in the following (7+9) + 5=7 + (9+5)

18x^4 (y^5) / 3xy^2= divide exponential expressions

Which of the following shows the prime factorization of 50? A. 5 x 10 B. 2 x 25 C. 2 x 2 x 5 D. 2 x 5 x 5

Priya spent 1/2 of the day hiking. She was lost 5/6 of the time that she was hiking. What fraction of the day was Priya lost

What is the place value of the first number in 552,945 ... and how would the number be writing

Leon earned $14 an hour. How much does he earn in 4 weeks if he works 12 hours each week

Solve for 2-2n=3n+17