How do u add 10 to 2 digits numbers

The sum of two number is 1000 and the difference between their square is 256000 find the numbers.

4 teachers decide to swap desk at work. How many ways can this be done if no teacher is to sit at their previous desk?

Julie has two formal events to go to. She has six formal dresses--two blue ones, one black, one red, and two white.

The perimeter of a rectangle is 34 units. Its width is 6.5 units. What is its length?

Round 543,982 to the nearest thousands

What are the next two palindromes greater than 50805

Y = f (x) = 9x Find f (x) when x = 1/2

What is 3 3/5 * (-8 1/3)

Taylor made 5 1⁄4 cups of iced tea. How many 10 ounce glasses can he fill to the brim with iced tea?

A country's population in 1993 was 83 million. in 2001 it was a 87 million. estimate the population in 2004 using the exponential growth formula. round to the nearest million