Which system of equations represent the matrix shown below? 1 2 -1| 8
-1 0 3| 15
1 -2 4| 18

A. x + 2y + z =8
x + y + 3z =15
x + 2y + 4z =18

B. x + 2y + z =8
x + 3z =15
x + 2y + 4z =18

C. x + 2y - z =8
-x + y + 3z =15
x - 2y + 4z =18

D. x + 2y - z =8
-x + 3z =15
x - 2y + 4z =18

Which of the following is the equation that says that the product of a number and ten is equal to 20 percent of that number ? a) 10n= 2.0n b) 10+n=.20n c) n+ .20n=10 d) 10n=0.20n

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?

Will give brainliest for correct answer 8. use the distance time graph to answer these questions: a. what does the graph tell us about the velocity of the car? b. what is the average velocity of the car? (show work) c. is the velocity reflected in the graph positive or negative?d. is there any point on the graph where the car is not moving? how do we know?