Is - (-12) and - 12 opposites?

There are 15 black marbles and 11 blue marbles. What is the ratio of black marbles to blue marbles?

What is the electrical charge If you have 10 protons and 10 neutrons

I brought 5 tickets. The tickets cost $170, including a $20 cover charge. How much did each ticket cost in equation format

You want to cover your book with fabric. the book measures 8 inches by 7 inches. the fabric cost $1.25 A square inch. How much will it cost to cover your book in fabric?

Sherman's backpack weighs 6 1/4 pounds. Brie's backpack weighs 5 3/4 pounds. How much heavier is Sherman's backpack than Brie's backpack

Working in separately, three carpenters can make three chairs in three days. How many chairs can 7 carpenters working at the same rate make in 30 days?

If f (x) = x - 4, what does f (3) represent? the value of (x - 4) when x = 3 the value of x when (x - 4) = 3 the value of 3f (x) when x = 3 the value of f (x) when (x - 4) = 3

Erica spent a total of $48.90 buying supplies to make smoothies. She bought a blender for $30 and bought 6 pounds of strawberries. What was the price per pound for strawberries?

In 1980, the United States' national debt exceeded $9 billion dollars. Express the exact dollar amount in scientific notation.

Each day a company use one half of a box of paper how many boxes would they have used after 8 days