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

The moon is about 380,000 km from Earth. which expression represents his measurement in scientific notation? A: 3.8 x 10 third power. B: 3.8 x 10 fourth power. C: 3.8 x 10 fifth power D: 3.8 x 10 sixth power.

A pet store has 2 gray rabbits, one eighth are gray. How many rabbits do the store has

Explain the method of place value principle of converting a fraction to decimal with 5 examples for class 7

Ratio of 250 minutes to 2 hours is

13 is 3 less than a number z

At a track meet, Jacob and daniel compete in 220 m hurdles. Daniels finishes in 3/4 of the a min. Jacob finishes with 5/12 of a min remaining. who ran the race in faster time?

Mark is simplifying fractions. Which fraction should he use to simplify 9/12 to lowest terms?

Empire Ford wants to estimate the proportion of trucks compared to all vehicles. They take several random samples of size 100 from the reserved parking lot (where there are numbered, pre-assigned parking spaces) at the Avista baseball stadium.

Find the rate of change in the number of voters between 8:00 (141) A. M and 10:00 A. M (798). Than interpret it's meaning

If a ball is selected at random from an urn containing six red balls, seven white balls, and seven blue balls, what is the probability that it will be a white ball?