How is density calculated given mass and volume A. Mass divided by volume D. Difference of volume and mass

Write an expression for the calculation the sum of the product of 4 and 3 and 1 and 1

What is x? 2x - x + 7 = x + 3 + 4

3/7 of what number = 21

The area of a regular hexagon is 55 in^2. Find the length of a side. Round your answer to the nearest tenth. I know the answer is 4.6 in., but I have no idea how to solve it.

What is the answer to this? 4/5 - 1/2=?

Abcd is a rectangle with b (-5, 0), c (7, 0) and d (7, 3). find the coordinatesof a.

Mary can make a costume twice as fast as Sam can. If they both work together, they can make it in 6 hours. How long will it take Mary to make the costume if she works alone?

An equiangular triangle is also known as: acute right. regular obtuse

Three friends each bought a different ipod nano music player the total for the three purcheses was $375 Thomas paid 30 more than Megan Ryan paid 15 less than Megan how much did each person pay

Trignometric ratios