For two matrices to be equal, they must have? the same size and both must be diagonal matrices.
both must be square matrices.
have equal corresponding elements.
have opposite corresponding elements.

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

In a certain city, the hourly wage of workers on temporary employment contracts is normally distributed. the mean is $15 and the standard deviation is $3. what percentage of temporary workers earn less than $12 per hour? a. 6% b. 16% c. 26% d. 36%