The Empire State Building is 1,454 feet tall (if you include the lightning rod). If a piece of gum is dropped from the top, how many seconds will it take for the gum to hit the street assuming no air resistance?

Anyone know? will mark brainliest if you're correct!

If 20% of a number is 35, what is 50% of that number?

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?