A bakery has decided to give out one free cupcake to the first 20 customers in their store. There are 10 chocolate cupcakes and 10 vanilla cupcakes for a total of
20 cupcakes to randomly give out.
What is the probability that the first cupcake given out is chocolate and the second cupcake given out is vanilla?
Enter the probability as a decimal. Round to the nearest thousandth.

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Find the distance from the theater to the library. leave your answer in simplest radical form if necessary. 12 √12 74 √74

Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?