At a festival, spherical balloons with a radius of are to be inflated with hot air and released. The air at the festival will have a temperature of and must be heated to to make the balloons float. Of propane fuel are available to be burned to heat the air. Calculate the maximum number of balloons that can be inflated with hot air.

Using these strategies on tests will improve your own test taking skill because it may inform you of strategies you were unaware of before reviewing them.

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.