Answer:
(-3;2)
Step-by-step explanation:
if the first equation is -5x+21=18y, then:

Answer:
96 pages.
Step-by-step explanation:
We know that Charlie read the same amount of pages each day, if we call <u>N </u>the number of pages read each day, his first number on the list was N, the second number was N + N = 2N, the third number was N + N + N = 3N....
His mom sums up these numbers and gets 432. Therefore we have that:
N + 2N + 3N + 4N + 5N + 6N + 7N + 8N = 432
36N = 432
N = 12.
Now we know that Charlie read 12 pages per day. With this information we can conclude that by the end of the 8th day he read:
12 pages x 8 = 96 pages.
Step-by-step explanation:
At first you need to take its lateral surface area by using the perimeter of base of the triangle and the height of prism.
Then after calculating it you need to find out its total surface area which is asked in the question and that is calculated by adding the area of both triangles of the prism in the lateral surface area.
Then that's your answer.