Answer:
504 Copies.
Explanation:
First you do 210 copies ÷ 5 minutes to tell you how many copies it will make per minute, that gives you 42 Copies per minute. Now lastly, you need to find how many it makes in 12 minutes. So if it does 42 Copies in one minute multiply 42 by 12 because there are 42 copies in one minute and you need to find how many it will make in 12 minutes so your answer is 42.
M= 2/7. I am not sure if it will put it in fraction form, but M=two sevenths.
Answer:
C
Step-by-step explanation:
6(a+b) + 2z = -8 ; divide by 2
3(a+b) + z = -4
a+b+z = 2; subtract z from both sides
a+b = 2-z; substitute a+b into equation 3(a+b) +z = -4
3(2-z) +z = -4; distribute
6 - 3z+ z= -4 ; subtract 6 on both sides
-3z + z = -4 -6 ; combine like terms
-2z = -10; divide both sides by -2
z= 5
3(a+b) +z = -4; substitute z by 5
3(a+b) +5 = -4; subtract 5 from both sides
3( a+b) = -4 -5; combine like terms
3(a+b) = -9; divide both sides by 3
(a+b) = -3
