6 situaciones en las que se hace necesario el uso de los números negativos

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?

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.

Find the arc length of the semicircle. 7the grade