A washer and a dryer cost $809 combined. the washer costs $91 less than the dryer. what is the cost of the dryer?

What is the absolute value of the complex number -4-sqrt2i

Louis wants to carpet the rectangular floor of his basement.the basement has an area of 864 square feet.the width of the basement is 2/3 it's length. what is the length of louis's basement

If 7x=9y, y/z = 7/5 , then x/z = (a) 2/7 (b) 7/9 (c) 9/5 (d) 9/7 (e) 5/9