Solve the system of equations by forming a matrix equation, then solve using inverse matrices. State your answer as an ordered pair. x + 2y = -7
-3x - 5y = 23

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?

The graph shows the amount of money noah earned based on the number of lawns he cut. which list shows the dependent quantities in the graph?

The random variable x is defined as the number marking the sector in which the arrow lands when the spinner in the diagram is spun once.