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?

How do u factor 6x^2+1x-2

What is 1,304,000,000 in scientific notation?

The sum of Andy and Brett's ages is 44. Andy's age is 8 more than twice Bret's age. Find the solution.

Given that - 5 < - 3, which statement is not true? -5 is to the left of - 3 on the number line. -3 is to the right of - 5 on the number line. -3 > - 5 -3 is less than - 5,

Henry can make 8 cupcakes (the y value) with one cup of flour (the x value). How many cup cakes can he make with 7 cups of flour

Whats 300 times 400? then add 500

Tina's swimming lesson started at 5:30 P. M. and ended at 6:25 P. M. How long did the swimming lesson last?

Solve - 1/2x>8 graph solution

Michale is traveling from San Francisco to Houston this morning. The flight will take 4 3/10 hours to complete. If the airplane travels 368.8 miles per hour, how many miles will the airplane travel? Explain

What is the correct first step to solving the equation x^2=10-3x