The mean of seven numbers is 21. Five of the numbers are 18,23,21,17, and 19. One of the remaining numbers is 3/4 of the other remaining number. What are the two unknown numbers?

Let a = {1, 2, 3, 4, 5} and b = {0, 3, 6}. find a. a ∪ b. b. a ∩ b. c. a - b. d. b - a.

Which expression is equivalent to 3/2*3/2*3/2*3/2

KCCO, Inc., has current assets of $6,000, net fixed assets of $25,100, current liabilities of $4,950, and long-term debt of $12,000. What is the value of the shareholders' equity account for this firm? (Do not round intermediate calculations.)

What is the simplify expression of 9a-4 (2a+5)

What is the general form of the series 1 + 2 + 4 + 8 + 16 + ... + 1,024?

How much water will be needed to completely fill a rectangular vase that has a length of 4 inches, a width of 4 inches, and a height of 16 inches?

3^x : write in terms of base e and simplify! ... ?

18 is 360% of what number?

26%, percent of a number is what fraction of that number?

Fractions that are greater than 3/8