\[\sum_{n=1}^{7} 2(-2)^{n-1}\]
Answer:
the solution is the whole line y = -x + 7
Step-by-step explanation:
both equations are identical
2y = 14 - 2x
=> y = 7 - x
which is exactly the same information as y=-x+7
so, there is no single crossing point. they are exactly covering each other. what "remains" is simply the whole line.
Answer:
Step-by-step explanation:
47+34=9k
81=9k
k=81/9=9
k=9
For every four white balls taken out one black ball is taken out so it would be the 52 white ball
