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Ksivusya [100]
3 years ago
5

If f(x) = 7x- 6, which of the following is the inverse of kx)?​

Mathematics
1 answer:
Yanka [14]3 years ago
3 0

Step-by-step explanation:

f(x) = 7x - 6

\:

<u>Inverse</u>

y = 7x - 6

x = 7y - 6

x + 6 = 7y

y =  \frac{x + 6}{7}

{f}^{ - 1} (x) =  \frac{x + 6}{7}

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Problem PageQuestion Calcium levels in people are normally distributed with a mean of mg/dL and a standard deviation of mg/dL. I
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Complete Question

The complete question is shown on the first uploaded image

Answer:

The  calcium level that is the borderline between low calcium levels and those not considered low is  c = 8.68

Step-by-step explanation:

From the question we are told that

    The mean is  \mu =  9.5\  mg/dL

     The standard deviation \sigma =  0.5 \ mg/dL

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Let X be a X random calcium level

  Now the  P(X < c) = 0.05

Here P denotes probability

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  Since the calcium level is normally distributed the z-value is  evaluated as

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The critical value for 0.05 from the standard normal distribution table is

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=>    \frac{c - \mu}{\sigma }  =  -1.645

substituting values

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=>     c = 8.68

 

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