Martha estimated there were 80 marbles in a jar for a contest. The actual number of marbles in the jar was 102. What was the percent error of Martha's estimation?

Question 10 of 211 pointuse the elimination method to solve the system of equations. choose thecorrect ordered pair.10x +2y = 643x - 4y = -36a. (4,12)b. (-3, 11)c. (2,10)d. (-5, 8)

How many square centimeters of wrapping paper will be used to wrap the shoe box?

Astudent is solving a system of equations by substitution and comes up with the solution 3 = 3. assuming that he solved the problem correctly, which of the following can be said about this system of equations?