The sum of a number and 3 times a second number is represented by a+3b = 39. The sum of half the of the first number and 1/3 of the second number is represented by 1/2a+1/3b=9. What is the first number a? What is the second number b?

What is the inverse of f (x) = 5x-4

Jake wants to estimate 15.92 + 0.85. How can he use rounding to estimate the sum? What is the estimate?

There are 950 students at Hanover High School. The ratio of the number of freshmen to all students is 3:10. The ratio of the number of sophomore to all students is 1:2. What is the ratio of the number of freshman to sophomore?

What's - 3 = n + 9 for algebra

Jada and Priya are trying to solve the equation 23+x=4. Jada says, "I think we should multiply each side by 32 because that is the reciprocal of 23." Priya says, "I think we should add - 23 to each side because that is the opposite of 23.

Jake is building a fence around his property. He wants the perimeter to be no more than 100 feet. He also wants the length to be at least 30 feet longer than the width.

You have $3.70 in dimes and quarters. You have 5 more quarters than dimes. How many of each type of coin do you have?

What is the median and mean of: 7,13,10,7,16

Bryce has a rug that is 14 decimeters by 16 decimeters. Draw a sketch of Bryce's rug. Then find the area of his rug. Show your work and label the answer with the correct units.

3.14 and A cylinder has a height of 6 feet and a radius of 5 feet. What is its volume? Use A round your answer to the nearest hundredth. cubic feet