How many sf is 20x17?

Is there a relationship between the sign positive or negative of the slope of a line and the angle the line makes with the x-axis? How do you write 18 in Russian? How many real solutions are there in the equation 2x2 plus 2x - 4 equals 0? Where is the plus sign on a land line phone? How far is 3 tens of a mile? Does a rhombus have 2 pairs of parllel sides? How many cm are in 38mm? How do you write one thousand two hundred and fifty dollars? Which digit in 1.234 is in the thousandths place? What does equal mean in mathematical term? How many times does 325 go into 1300? What number is 1.5 percent of 15? Is 0.12 rational? What is 96cm in feet? What is the sum of the measure of the angles of a decagon? How many zeros are in a hundred trillion? What is the formula for finding the annual payment for an investment? What are all of your names? How much edges an rhombus shape has? What are LCM on a math problem?