725 miles in 8 hours ___ miles per hour
2 answers:
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<u>Answer:</u>
x = 4, it is an extraneous solution.
<u>Step-by-step explanation:</u>
Translating the given statement, we get the following equation:
Dividing both sides by 3, we get:
Now we will take square on both sides of the equation to get rid of the square root to get:
So we are left with:
Therefore, the solution is 4.
Also, it is an extraneous solution because the equality is not met by substituting x = 4 in the original equation: