Dylan is evaluating the expression 13+19+7+10. At one step in his work, Dylan rewrites the equation as 13+7+19+10. Which property of addition must Dylan have used when he evaluated the expression?

What is the greatest common factor of the expression 12x^+18x^2

A 12 oz bottle of clean green dish soap is $1.09 while a 20 oz bottle cost 1.99 which is the better to buy

For how many three digit numbers (100 to 999) is the sum of the digits even? (For example, 343 has an even sum of digits: 3 + 4 + 3 = 10 which is even.) Find the answer and explain why it is correct in at least two different ways.

12 feet's + 14 yards

Which is the prime factorization of 84?

Find the area of a trapaziod that has a base of 7 cm and 15 cm and a height of 10 cm

What is 5/2 times x = 1

Use the figure to find the measure if the numbered angles.

Val and tony get paid per project. Val is paid a project fee of $44 plus $12 per hour. Tony is paid a project fee of $35 plus $15 per hour.

The pumpkin patch is open everyday if it sells 2750 pounds of pumpkins each day about how many pounds does it sell in 7 days