Ruth has the following set of refrigerator magnets: {a, b, c, d, e}. (a) how many different three-letter strings can she form with these magnets? (b) how many different three-letter strings can she form if the middle letter must be a vowel?

Formulate the indicated conclusion in nontechnical terms. be sure to address the original claim. the foundation chair for a hospital claims that the mean number of filled overnight beds is over 523, and she is therefore justified starting a funding campaign to add a wing to the hospital. assuming that a hypothesis test has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms.

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex

Melanie is buying a bathing suit that costs 39.99. she is given a discount at the cash register of $6.00 when she scratched 15% off on a game piece for a store promotion. what will the sale price of melanie’s bathing suit be?