Which of the following is the best approximation of 6 times the positive square root of 42?
60.3
44.7
30.0
38.9
Correct Answer : D
In this case, we use a calculator to estimate the positive square root of 42.
Then, multiplying the square root above with 6 becomes
Then, the approximate value of 6 time the positive square root of 42 is 38.9.
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Explanation
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Explanation
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Explanation
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Explanation
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Correct Answer is D
Explanation
To simplify this expression, we follow the order of operations as follows:
First, we start with the numerator and solve it as follows
[2(6+3*9)]
We start with multiplication in inner brackets, 3 * 9 = 27. The expression becomes
[2(6+27)]
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[2(33)]=2*33=66
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Thus, the expression is reduced into
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Explanation
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Explanation
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Correct Answer is D
Explanation
In this case, we use a calculator to estimate the positive square root of 42.
Then, multiplying the square root above with 6 becomes
Then, the approximate value of 6 time the positive square root of 42 is 38.9.
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