Answer:
12 minutes.
Step-by-step explanation:
Marla uses two copiers to make copies of a one-page newsletter. *Copier R makes 60 copies per minute. *Copier T makes 40 copies per minute.
Since both copier start at the same time, let the number of minutes used by both copiers be represented by x
60 × x + 40 × x = 1200 copies
60x + 40x = 1200
100x = 1200
x = 1200/100
x = 12 minutes
Therefore, it will take 12 minutes l to make 1200 copies.
The 4th one is the answer
Answer:
Coordinates of E is (-2,7)
Step-by-step explanation:
Midpoint = ((x1+x2)/2,(y1+y2)/2)
xK = (xW + xE)/2 => xE = 2xK - xW = 2(0) - 2 = -2
yK = (yW + yE)/2 => yE = 2yK - yW = 2(3) - (-1) = 7
The square root of 445 is 21.095 so the two whole numbers could be 20 and 21
