A Civil Engineer in Chicago has constructed a scale model of his new suspension bridge design. The scale used by the engineer is 2:550. If the engineer's model is 16 feet long, how long would the real bridge be?

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1