Need Help PLEASE Ex 1:A scale model of a human heart is 196 inches long. The scale is 32 to 1. how many inches long is the actual heart? (can someone explain to me how to do this i have many other questions like this)

Which of the following parabolas opens down?

Hey free points ! people i have a few math questions on my profile consider looking at them i have to get done in 30 mins!

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.