SOLUTION: One eighth of the square root of 7 less than a number is 2. What is the number?

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Question 128396This question is from textbook Structure and Method Book 1
: One eighth of the square root of 7 less than a number is 2. What is the number? This question is from textbook Structure and Method Book 1

Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Let the number be n.
n-%281%2F8%29sqrt%287%29+=+2 Add %281%2F8%29sqrt%287%29+ to both sides.
n+=+2%2B%281%2F8%29sqrt%287%29 Simplify.
n+=+%2816%2Bsqrt%287%29%29%2F8 This is the exact answer.
For an approximate answer, take the square root of 7 (an irrational number).
n+=+%2816%2B2.646%29%2F8
n+=+2.33Approximately.