Section: Mathematical Reasoning
28)
Solve for the positive value of c.
9c2 - 11 = 718
Explanation
Isolate the variable by adding 11 to both sides of the equation right away. You'll be left with:
9c2 = 729
Divide both sides by 9.
c2 = 81
Take the square root of 81.
c = 9
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