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2 years ago

3b + 9 = -18 Can some one me with this question plss

Mathematics

2 answers:

photoshop1234 [79]2 years ago

7 0

<span> b = -9 that is the answer that i came up with i passed algebra with a A+ so that should be it.</span>

In-s [12.5K]2 years ago

3 0

$3b + 9 = -18$

$3b=-18-9$

$3b=-27$

$b=-27/3$

$b=-9$

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Neko [114]

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6 0

2 years ago

Read 2 more answers

Assuming that the heights of college women are normally distributed with mean 64 inches and standard deviation 1.5 inches, what

professor190 [17]

Answer:

15.74% of women are between 65.5 inches and 68.5 inches.

Step-by-step explanation:

Problems of normally distributed samples can be 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:

$\mu = 64, \sigma = 1.5$

What percentage of women are between 65.5 inches and 68.5 inches?

This percentage is the pvalue of Z when X = 68.5 subtracted by the pvalue of Z when X = 65.5.

X = 68.5

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

$Z = \frac{68.5 - 64}{1.5}$

$Z = 3$

$Z = 3$ has a pvalue of 0.9987

X = 65.5

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

$Z = \frac{65.5 - 64}{1.5}$

$Z = 1$

$Z = 1$ has a pvalue of 0.8413

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3 years ago

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Answer:

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100/800 = 0.05y

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2 years ago

Change 4ž to an<br> improper fraction.<br> [?]

Sergio [31]

Answer:

39/8

Step-by-step explanation:

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4 and 7/8

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2 years ago

Milan bought 3 CDs that were each the same price. Including sales tax, he paid a total of $44.40. Each CD had a tax of $1.30. Wh

insens350 [35]

Answer:

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Step-by-step explanation:

Given data

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7 0

2 years ago