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Sholpan [36]
3 years ago
8

-2m + 4m + 5 = -3 Tell me what you did please!

Mathematics
2 answers:
Vlad [161]3 years ago
3 0
-2m+4m+5=-3 \ \ \ |\hbox{substraction 2m from 4m} \\
2m+5=-3 \ \ \ |\hbox{substraction 5 from both sides}\\
2m+5-5=-3-5 \\
2m=-8 \ \ \ |\hbox{division by 2} \\
m=-4
Nata [24]3 years ago
3 0
I haven't done anything yet.
Here's what you <em>could</em> do with it:

-- Combine the  -2m  and the  4m  on the left side.  Together, they make  2m .

Now the equation is:                2m + 5 = -3

Subtract  5  from each side:      2m      = -8

Divide each side by  2 :          <em>    m      = -4</em>
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Answer:

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Step-by-step explanation:

22 + 15 = d - 17

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The daily dinner bills in a local restaurant are normally distributed with a mean of $28 and a standard deviation of $6. What ar
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Answer:

The minimum value of the bill that is greater than 95% of the bills is $37.87.

Step-by-step explanation:

When the distribution is normal, we use 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 question, we have that:

\mu = 28, \sigma = 6

What are the minimum value of the bill that is greater than 95% of the bills?

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The minimum value of the bill that is greater than 95% of the bills is $37.87.

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3 years ago
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larisa86 [58]
1/5 is equal to 2/10 so the one with 3/10 has more
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I need help going through the steps of a problem please tell steps and not just answer
mezya [45]

Answer:

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