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Nesterboy [21]
4 years ago
13

PLEASE HELPPP!!!

Mathematics
2 answers:
Ad libitum [116K]4 years ago
8 0
64 ʲᵍᶻʰˢʲᵏᵍʲˢᵒᵇ. ᴶʲˢʲᶻʲⁿᵛˢˢ
quester [9]4 years ago
5 0

Answer:

1/4

Step-by-step explanation:

1. 18u−15−7u=3u−12−1

2. 11u−15=3u−12−1  (Simplify  18u-15-7u18u−15−7u  to  11u-1511u−15)

3. 11u−15=3u−13  (Simplify  3u-12-13u−12−1  to  3u-133u−13)

4. 11u=3u−13+15 (Add 1515 to both sides)

5. 11u=3u+2  ( Simplify  3u-13+153u−13+15  to  3u+23u+2)

6. 11u−3u=2  ( Subtract 3u3u from both sides)

7. 8u=2 ( Simplify  11u-3u11u−3u to 8u)

8. u= 2/8  (Divide both sides by 8)

9.u=1/4 (Simplify 2/8 to 1/4)

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Answer:

210

Step-by-step explanation:

In a normal distribtuion mean=mode=median

so 210=median

3 0
3 years ago
Please help I did not get what I was supposed to do
Sladkaya [172]

Answer:

See below

Step-by-step explanation:

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Actually Lin did a mistake, she obtained square root and not cube root.

8 0
3 years ago
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A research company desires to know the mean consumption of meat per week among people over age 23. A sample of 164 people over a
Elan Coil [88]

Answer:

The 80% confidence interval for the mean consumption of meat among people over age 23 is between 4 and 4.2 pounds.

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{1-0.8}{2} = 0.1

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 1-0.1 = 0.9, so z = 1.28

Now, find 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 = 1.28*\frac{0.7}{\sqrt{164}} = 0.07

The lower end of the interval is the mean subtracted by M. So it is 4.1 - 0.07 = 4.03 pounds

The upper end of the interval is the mean added to M. So it is 4.1 + 0.07 = 4.17 pounds

Rounded to one decimal place

The 80% confidence interval for the mean consumption of meat among people over age 23 is between 4 and 4.2 pounds.

8 0
3 years ago
Sarah is working as a truck driver. She gets paid $100 everyday and then $22 per hr driving. How many hours does sarah have to w
TiliK225 [7]

Answer:8

Step-by-step explanation: she makes $100 a day so you would subtract that from the total (276) then you would divide the remainder (176) by the amount she makes an hour (22) then you would end up with 8 hours

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3 years ago
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Please help anyone and thank you
snow_lady [41]

Answer and Step-by-step explanation:

The two statements that are true are statement 1 and statement 4:

- The sum of pi and 0 is irrational.

- The product of \frac{9}{5} and \sqrt{19 } is irrational.

Pi is an irrational number, and the square root of 19 is irrational. That's because these numbers can't be put into a simplified fraction to encompass all the digits it contains.

#teamtrees #PAW (Plant And Water)

8 0
3 years ago
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