You flip three coins. What is the probability of getting at least two heads? How do you know?

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.

There were 32 volunteers to donate blood. unfortunately, nn of the volunteers did not meet the health requirements, so they couldn't donate. the rest of the volunteers donated 470 milliliters each.

Consider the proportion  8 k = 5 2.7 use the cross products to write an equation: solve the equation: k = .