Marthy has exactly five blue pens, six black pens, and four red pens in his knapsack. if he pulls out one pen at random from his knapsack. what is the probability that the pen is either red or black?

Dr. Potter provides vaccinations against polio and measles. Each polio vaccination multi-dose vial consists of 44 individual doses, and each measles vaccination multi-dose vials consists of 22 individual doses. Last year, Dr.

Write each of the following quadratic functions in vertex form

How many times does nine go into 42

153,394 round to nearest hundred thousand

Alonzo will run at least 31 miles this week. So far he has run 19 what are the possible numbers of additional miles he will run

The partial factorization of x2 - 3x - 10 is modeled with algebra tiles. Which unit tiles are needed to complete the factorization?

Mrs. Noah'a bill, before tax, is $50. The sales tax rate is 3%. Mrs. Noah decides to leave a 2% tip for the gate keeper based on the pre-tax amount. How much will the total bill be, including tax and tip?

Best defines the two quantities that are measured to find the call rate of a phone company? A quantity of price measured in dollars depends on the quantity of time measured in minutes, B the quantity of time measured in minutes depends on the

Determine the set values of k for which the equation (3-2k) x² + (2k-3) x + 1 = 0 has no real roots

What is the value? 5x+3=4x? bit confused