Answer:
answer 1:3
Step-by-step explanation:
Please Rewrite you question so it makes sense.
Good Luck :D
Answer:
Step-by-step explanation:
Given
Represent each friend with the first letter of their name
So:
Substitute: in
Collect like terms
Make D + E the subject in
Substitute in
Collect like terms
Substitute in and
So, we have:
We have:
i.e.
and
For and to be true,
i.e.
So, we have:
From the equations given above, you can graph them by the slope and the y-intercept. I will be solving this by substitution method. It will be giving the same values as with graphing. We do as follows:
-2x + 30 <span>= -x + 21
-x = -9
x = 9
y = -9+21 = 12
Hope this helps. Have a nice day.
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