How to write the total of 138 and r is equal to 169 as an equation

The four-digit numeral 3AA1 is divisible by 9. What digit does A represent?

If X = 3 centimeters, Y = 4 centimeters, and Z = 5 centimeters, what is the area of the object?

at 1:00 pm the water level in a pool was 13 inches at 1:30 pm the water level is 18 inches at 2:30 pm the water level is 28 inches. what is the constant rate of change

Last week, Lindsay earned $10 per hour plus a $60 bonus for good job performance. She spends 1/15 of her paycheck on dinner with friends. If she had not earned the bonus, the amount she spent on dinner would have been 1/10 of her paycheck.

The cruising speed of of kennedy's boat is 20 mi/h and she plans to cruise at this speed for 80 miles, plus or minus 10 miles. What will be the minimum and maximum time that she will travel now?

If the mean weight of 3 outfielders on the baseball team is 194 lb and the mean weight of the 6 other players is 229 lb, what is the mean weight of the 9 -person team?

6x+3y=15 what is the ordered pair of the solution

Question: If each girl used one marshmallow per smore how many marshmallows were used in all? Show your work.

A woman plans to use one fourth of a 48 foot x 100 foot rectangular backyard to plant garden. Find the perimeter of the garden if the length is 40 feet greater than the width

Bryan played two baseball games last weekend. He got 7 hits in all. He had 3 hits in the first game. How many hits did he get in the second game?