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Kobotan [32]
3 years ago
5

Can yu plz answer this inequality 3<1/2x+1

Mathematics
1 answer:
Aleks04 [339]3 years ago
5 0
First you need to change the equation to 3 < x/2 + 1

then we can treat it like a normal equation.

subtract 1 from each side to get 2 < x/2

then multiply both sides by 2 to get rid of the fraction and we have

4 < x and we switch it around to get 

x > 4 as our answer! :)
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Answer:

Hey there!

The rule for converting milligrams to grams is dividing by 1000.

So, 32372 milligrams would be 32.372 grams.

Let me know if this helps :)

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x-3y+4
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Answer:

(1,4) IS THE ANSWER. I 100% believe that's the answer

Step-by-step explanation:

I can't explain it. (Next time when you get the same kind of question just look for a clear white paper. Cut it and make sure it's the size as the graph. Then put it on the computer screen then trace the shape that's on the graph and label the points like how they're labeled in your graph. After that, as the paper is one the screen of your computer, place a pencil or a pen on the paper and make sure it's aligned in the center of the graph. Press the pencil or pen a bit hard so the paper won't slide or fall out. After that rotate the paper to the ___degrees that's stated in the question. If the rotation is clockwise go clockwise. If the rotation is counterclockwise go counterclockwise. After that you'll get the answers.)

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3 years ago
A random sample of a specific brand of snack bar is tested for calorie count, with the following results: Assume the population
LenKa [72]

Answer:

The 95% confidence interval for the population mean (calorie count of the snacks bars) is (130.32, 161.68).

Step-by-step explanation:

<em>The question is incomplete:</em>

<em>"A random sample of a specific brand of snack bar is tested for calorie count, with the following results: </em><em>149, 145,140,160,149,153,131,134,153</em><em>. Assume the population standard deviation is </em><em>σ=24</em><em> and that the population is approximately normal. Construct a 95% confidence interval for the calorie count of the snack bars."</em>

We start by calculating the mean of the sample:

M=\dfrac{1}{9}\sum_{i=1}^{9}(149+145+140+160+149+153+131+134+153)\\\\\\ M=\dfrac{1314}{9}=146

We have to calculate a 95% confidence interval for the mean.

The population standard deviation is know and is σ=24.

The sample mean is M=146.

The sample size is N=9.

As σ is known, the standard error of the mean (σM) is calculated as: \sigma_M=\dfrac{\sigma}{\sqrt{N}}=\dfrac{24}{\sqrt{9}}=\dfrac{24}{3}=8

The z-value for a 95% confidence interval is z=1.96.

The margin of error (MOE) can be calculated as:

MOE=z\cdot \sigma_M=1.96 \cdot 8=15.68

Then, the lower and upper bounds of the confidence interval are:

LL=M-t \cdot s_M = 146-15.68=130.32\\\\UL=M+t \cdot s_M = 146+15.68=161.68

The 95% confidence interval for the population mean is (130.32, 161.68).

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Answer:

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