Rachel rides her biycle 12 kilometers due south from her home. Then she turns and rides 9 kilometets due west. How far is rachel
from her home?
2 answers:
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Answer:
Step-by-step explanation:
We start by subtracting from both sides of the second inequality:
Therefore, we conclude that:
Therefore, every point that satisfies the system has a -coordinate greater than
.
Answer:
The answer is A.
Step-by-step explanation:
So we have the two equations:
To make a substitution of the second equation into the first equation, we need to isolate the <em>y </em>variable in the second equation. Thus:
Now, we can substitute this into the first equation. Therefore: