Adrian wants to buy a plum for 80 cents. he has half dollars, quarters, and dimes he find three ways to make 80 cents.

If a =6, what is the value of 2a(3b + 5c)?

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is:

Find the equation of the ellipse with the following properties. the ellipse with foci at (0, 6) and (0, -6); y-intercepts (0, 8) and (0, -8).edit: the answer is x^2 over 28 + y^2 over 64 = 1