The sum of two numbers is 9. Their difference is 21

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Which description is represented by a discrete graph? kiley bought a platter for $19 and several matching bowls that were $8 each. what is the total cost before tax? the temperature at 9 a. m. was 83° f and is heating up at an average rate of 6°f per hour. what is the temperature x hours later? juan ate an egg with 78 calories and some cereal with 110 calories per serving for breakfast. what is the total amount of calories he consumed? a bottle contained 2,000 ml of liquid and is being poured out at an average rate of 300 ml per second. how much liquid is left in the bottle after x seconds?

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction