Which angle corresponds to angle 8? i think it's b or d.

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?