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zvonat [6]
3 years ago
5

What is the common rule for simplifying a negative exponent with a coefficient? Ex: 3^-1

Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
4 0
<h2>Answer:</h2>

<u>Negative exponents in the numerator get moved to the denominator and become positive exponents</u>

<h2>Step-by-step explanation:</h2>

In any problem where the exponent is given in negative can be solved by taking negative exponents in the numerator to the denominator and become positive exponents.

For instance the given problem can be solved as writing 3 ^ -1 as 1/3

So the rule is moving the exponent to the denominator and make it positive

rjkz [21]3 years ago
3 0
Anything to a negative power becomes the inverse with the coefficient to a positive power.
For example, 3^-1 becomes 1/3^1 or just 1/3.
3^-2 would be 1/3^2 or 1/9.
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Find the correct linear equation: y is the quotient of thrice a number and ten.
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Answer:

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Step-by-step explanation:

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A person must score in the upper 8% of the population on an IQ test to qualify for membership in MENSA, the international high-I
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Answer:

A person must get an IQ score of at least 138.885 to qualify.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 115, \sigma = 17

(a). [7pts] What IQ score must a person get to qualify

Top 8%, so at least the 100-8 = 92th percentile.

Scores of X and higher, in which X is found when Z has a pvalue of 0.92. So X when Z = 1.405.

Z = \frac{X - \mu}{\sigma}

1.405 = \frac{X - 115}{17}

X - 115 = 17*1.405

X = 138.885

A person must get an IQ score of at least 138.885 to qualify.

5 0
3 years ago
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dmitriy555 [2]

Answer:

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hope this helps

have a good day :)

Step-by-step explanation:

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A 0.365 B Margaret C 1.56 D Tuesday
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