Answer: <em>"7 is a solution to the original equation. The value –1 is an extraneous solution."</em>
Step-by-step explanation:
The equation
can be solved by squaring both sides:

We can see that -1 and 7 are solutions, but make sure they are not extraneous by substituting them in the original equation:

The square root of 49 equals 7, but the square root of -1 is an imaginary number.
The correct choice is <em>"7 is a solution to the original equation. The value –1 is an extraneous solution."</em>
<h3>
Answer: Adjacent</h3>
Adjacent angles share a common side. Think of two neighboring adjacent apartments that share a common wall.
Answer:
666 divided by 6 is 111. So, they would need 111 vans.
-7.5 / -2.5 = 3
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6 is the mode since it appears the most, 3 times