How can you solve this equation?

200/r+10 = 200/r-1

A group of family went to the store and bought burgers. The first family bought 4 hamburger and 3 cheeseburger for $31. The second family bought 3 hamburger and 2 cheeseburger for $22. What is the price for each.

The mountain is 1,500 feet above sea level

4 4/7 as a improper fraction

A plumber had a pipe that was 2 / text { yards}2 yards long. He cut 18 / text{ inches}18 inches off the end of the pipe. How many feet long was the pipe after the plumber cut it?

Rewrite without parentheses. 5x^2 y (4x^5 - 8x^4 y^3 + 3y^3) Simplify your answer as much as possible.

Jamal is making pancakes. He has 6 3/4 cups of batter, but he needs a total of 12 cups. How much more batter does Jamal need?

A surfer recorded a maximum wave height each day at the beach for 10 days. The results are shown in this dot plot

Edith wants to plan a dinner for one day of the week. She decides to put all the days of the week once into a hat. If she chooses one day a random, what is the probability that she chooses a weekday?

What is the lcd for the factor 1/3 and 2/9?

98 is what percent of 2487