Which of the ratios below has a unit rate of 12? Select all that apply. A) 20:8 B) 36:3 C) 120:10 D) 5:80 E) 96:8​

Evaluate the expression for the given value of the variable 7a - 4a for a =8

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?