Prove that 2 divides n2 + n whenever n is a positive integer.

Find the selling price of a computer if it costs $1,980 and it sold at a 4% loss.

I have 4 millions, 8 thousands, 11 tens, 6ones, 9 tenths and 5 hundredths. what number am I

What is the LCD of 3/7x, 6/7x+7

What is the value of y if (4y + 8) - (7t - 12) = 11?

What is the ratio if counted 14 robins out of 150

Use properties of addition and subtraction to evaluate the expression. -42-29-28

Which term best describes a fraction that has a variable or variable expression in its numerator or denominator

What is 7 4/7 simplified

Riley had to add this group of numbers (56 + 47 + 53), but he wanted to add them as quickly and as easily as possible. Here is how he decided to add the numbers: 56 + 47 + 53 = 56 + (47 + 53) = 56 + 100 = 156.

Does the rule y=-5x^6 represent an exponential function