Writing and reasoning : how do you know that 2+4 = 4+2? Explain

Delia has 493 stamps in her stamp collection. She can put 16 stamps on each page of an album. How many pages can she fill completely.

Mrs. Adam's advisory class is selling candy bars to raise money for sports equipment. The class gets to keep 25%, or $108, of the money. How much money did Mrs. Adam's advisory class raise in all?

What is the factorization of 2x^2+9x+9

The RideEm Bicycles factory can produce 110 bicycles in a day at a total cost of $10,900 and it can produce 130 bicycles in a day at a total cost of $11,600. What are the company's daily fixed costs? What is the marginal cost per bicycle?

What is a net? WIll mark brainliest!

Simplify (5x) (x^5 - 12x)

Find the LCM of 6 and 12

The sum of the digits of a two digit number is 6 when the numbers are reversed the number decreases by 18

Central Middle School sold 50 tickets for one night of the school play. Student tickets sold for $2 each and adult tickets sold for$3 each. They took in $135. How many of each type of ticket did they sell?

I have done a math equation for school and i forgot if i could leave a inproper fraction as my answer or if its a fraction i can reduce should i or should i not