Mary's age is twice the sum of John's age and 3. The sum of both ages is 21 years. Find the age of each one.

You are dealt a hand of three cards, one at a time. Find the probability of each of the following. a) The first heart you get is the third card dealt. b) Your cards are all diamonds. c) You get no aces. d) You have at least one heart.

A car traveled at 65 miles per hour for 1 hours and then traveled at 50 miles per hour for 2 hours. How many miles did the car travel? A. 190.5 miles B. 460.0 miles C. 215.0 miles D. 237.5 miles E. 222.5 miles

Chris was putting a railing on his deck. At the end of the day, he had 11.5 feet of railing left over. During the day, he had used two 1.5-foot-long piece of railing, one 3.25-foot-long piece of railing, and one 6-foot-long piece of railing.

A floor is 18ft long and 12ft wide. what is the area of the floor in sqaure yards?

A survey of people showed that they prefer vanilla ice cream to chocolate ice cream at a ratio of 3 to 5. Determine the number of people who would prefer each flavor if 150 people were surveyed.

What is 6/13 in short decimal form.

Ella has a box of chocolate candies. She gives of the candies to her sister, 4 to her brother, and she eats the remaining 12 candies. How many chocolate candies were in the box originally?

Bella Sandino failed to pay her cell phone bill in the amount of $85.14 by the due date of March 4. Calculate the amount Bella must pay on March 20 if the company charges 20% interest on late payments. Assume a 365-day year.

How many minutes is 22 hours

What makes a unique triangle a unique triangle?