Answer:
All you need to do is make sure the first expression is solved for y (which it is), and then substitute it into the second expression in place of any occurrences of y:
given the second expression:
x - y = 1
We'll replace y with it's value in the first expression:
x - (y) = 1
x - (5 - 2x) = 1
Now we can expand the resulting equation:
x - 5 + 2x = 1
So <em>neither</em> of the answers provided are correct.
You can then solve for x:
x - 5 + 2x = 1
x - 5 + 5 + 2x = 1 + 5
x + 2x = 6
3x = 6
3x/3 = 6/3
x = 2
After that, you can find y by plugging x into either of the two original equations:
y = 5 - 2x
y = 5 - 2(2)
y = 5 - 4
y = 1
Answer:
1) The rate of change represents the number of stamps she adds each month.
2) The rate of change is 3 stamps per month
3) How many stamps she has in her collection before she starts adding 3 every month.
4) 8 stamps.
Step-by-step explanation:
So the first answer is 65+50m because its 65 dollars for sign up PLUS 50 PER month. and 20+55m. The second question is saying that both the gyms have the same price, so I will say that its 50+ 20m for both. It represents the total cost of the gym membership that you have to pay. Hope this helped.
Answer:
BG = 3; GE = 6
Step-by-step explanation:
The centroid of a triangle divides the median into two parts in the ratio 1 : 2. That is, the short segment is 1/3 the length of the median, and the long segment is 2/3 the length of the median.
BG = 1/3·BE = 9/3 = 3
GE = 2/3·BE = 2/3·9 = 18/3 = 6
