For the first equation, I put it in y=mx+b form, so y=-3x-9
the second one is x=4
hope i helped
Answer:
21.
Step-by-step explanation:
The answer is 5.
you can turn it into a fraction ratio (6 over 15 is equal to 2 over c) and then cross multiply
<ADB = 90 degrees
hope it helps
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