Which expressions are differences of squares?

Select each correct answer.

A: t^2-1

B: k^2+81

C: n^2-225

D: p^2-40

What is 9.086 to the nearest one

Add. (5 - 2i) + (6-5i)

Sets L and J are defined as follows. L={l, m, n, o} J={i, j, k, l, m} Find the union of L and J. L∩J={i, j, k, l, m, n, o} L∪J={i, j, k, l, m, n, o} L∩=∅ L∪J={l, m}

Ashton earns extra money by doing odd jobs for his neighbors. He charges a flat fee of $15 plus $8 per hour for each job. If he earned $47 for a job he did last week, how many hours did he work?

For every 3.3 km rock is buried, the pressure placed upon it increased 0.1 gigapascals. If rock undergoing metamorphosis is buried at 16 km what is the pressure placed on that rock?

The difference of nineteen times a number and four

18.052 in expanded word form

What is three - 3 2/3

Jorge and Mary are both filling cups with fruit punch in preparation for a party. After 3 minutes, Jorge had 53 cups left to be filled, and after 5 minutes, he had 25 cups left to be filled. Mary's progress is shown in the table of values below.

Suppose the temperature at 6pm was 30 f. What would the temperature have been