Questions in mathematics

Questions in mathematics

[Done] What number is the same as 7 tens and 20 ones? What number is the same as 5 tens and 13 ones?

[Done] Is \(-1.125\) a real number?

[Done] What number is 70% of 280?

[Done] When you eliminate \( y \), what is the resulting equation of the system: \[ 2x + y - 4 = 0 \] \[ 2x - y - 4 = 0 \]

[Done] Express the number \( y \) divided by 100.

[Done] What two numbers add up to 39 and multiply to 270?

[Done] A fish tank holds 20 liters of water. How many milliliters does the fish tank hold?

[Done] How do I find the slope-intercept form of the equation \(x + y + 3 = 0\)?

[Done] What is the difference between a pentagonal prism and a pentagonal pyramid?

[Done] On a desk, there are 6 sheets of blue paper, 4 sheets of yellow paper, 5 sheets of green paper, and 2 sheets of pink paper. In how many ways can the paper be stacked?