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ludmilkaskok [199]
3 years ago
14

Which expression is equivalent to -3x + 24

Mathematics
1 answer:
zalisa [80]3 years ago
7 0

Answer:

-1x + 8

Step-by-step explanation:

Since you did not give any multiple choice options, here is a problem that is equivalent, because I divided the whole problem by 3, making it exactly equal to the other problem in size.

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What if Erika and Bradley 14 miles each day. How many days will they hike exactly 14 miles?
Maru [420]
Every day? did you not type the full question??
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We draw a random sample of size 36 from a population with standard deviation 3.5. If the sample mean is 27, what is a 95% confid
inessss [21]

Answer:

The 95% confidence interval for the population mean is between 25.86 and 28.14.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.96\frac{3.5}{\sqrt{36}} = 1.14

The lower end of the interval is the sample mean subtracted by M. So it is 27 - 1.14 = 25.86

The upper end of the interval is the sample mean added to M. So it is 27 + 1.14 = 28.14

The 95% confidence interval for the population mean is between 25.86 and 28.14.

3 0
3 years ago
Read 2 more answers
8th grade math, please help.
Levart [38]

Answer:

value of x is 31

Step-by-step explanation:

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This is correct if you need a better explanation let me know.

5 0
3 years ago
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The chance of landing on heads when flipping a coin.
joja [24]

Answer:

50%

Step-by-step explanation:

there's an equal chance that you can hand on heads or tails

brainliest please! Have a good day :)

3 0
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Answer:

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Step-by-step explanation:

6 and forty-two ten-thousandths as a decimal.

mixed number : 6\frac{42}{10,000}

decimal : 6.0042

7 0
3 years ago
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