Help last assignment pls.

Mathematics

1 answer:

KatRina [158]3 years ago

3 0

So we have the equation 13 = d ÷ 6. To find d, reverse the equation by using multiplication. (13 × 6 = d)

Multiply 13 by 6.

13 × 6 = 78

Now plug the product into the original equation to check.

78 ÷ 6 = 13

<h2>Answer:</h2>

d = 78

I hope this helps!

if you need help with anything else in this category let me know :)

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IQ scores of at least 130.81 are identified with the upper 2%.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Mean of 100 and a standard deviation of 15.

This means that $\mu = 100, \sigma = 15$