Explain how to simplify this expression: (7a + 9) + (4a - 7).

Round 6.82245628434 to 5 decimal places

A total of 630 tickets were sold for the school play. they were either adult tickets or student tickets. there were 70 fewer student tickets sold than adult tickets. how many adult tickets were sold?

Benita has three ropes measuring 54 centimeters, 108 centimeters, and 189 centimeters. She cuts all of them into equal peices. The length of each piece is the longest possiblelength she can cut. a. What is tye length of each piece of cut rope? b.

Abigail had a fish tank that was in the shape of a box. The dimensions were 1 foot deep by 24 inches wide, by 18 inches tall. How many cubic inches of water will it take to completely fill the tank?

What is the median of this set of data values? 11, 13, 14, 15, 18, 20, 23, 26

At present a man is 5 times as old as his son, in 13 years time he will be three times as old as his son. Find the man's present age?

Carol makes 9 1/2 cup of snack mix and puts 2/3 snack mix in bags, how many bags does she make

Is 7/13 equal to 8/14

You are purchasing 2 shirts at $10.00 (each) and 1 pair of jeans at $35.00 (each). You have a coupon for 10% off. How much is the total cost with the discount? $49.50 $5.50 $60.50 $55.00

21/-21. What is 21 divided by negative 21?