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pochemuha
3 years ago
10

Idk that problem ,can somebody help me please

Mathematics
1 answer:
Alina [70]3 years ago
8 0

Answer:

Step-by-step explanation:

120

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The number of flaws per square yard in a type of carpet material varies with mean 1.4 flaws per square yard and standard deviati
oksian1 [2.3K]
According to the Central Limit Theorem, the distribution of the sample means is approximately normal, with the mean equal to the population mean (1.4 flaws per square yard) and standard deviation given by:
\frac{\sigma}{ \sqrt{n} }=\frac{1.2}{ \sqrt{178} }=0.09
The z-score for 1.5 flaws per square yard is:
z=\frac{1.5-1.4}{0.09}=1.11
The cumulative probability for a z-score of 1.11 is 0.8665. Therefore the probability that the mean number of flaws exceeds 1.5 per square yard is
1 - 0.8665 = 0.1335.
6 0
3 years ago
When the smaller of two consecutive integers is added to four times the larger, the result is 49. Find the integers.
ryzh [129]
4(n+1)+n=49\\
4n+4+n=49\\
5n=45\\
n=9\\
n+1=10


These numbers are 9 and 10.
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3 years ago
Write a recursive definition ,write in algebraic notation<br><br> 891,297,99,33,11,...
Elodia [21]
a_1=891\\&#10;a_n=\dfrac{a_{n-1}}{3}
7 0
2 years ago
Find the value of x please.
igor_vitrenko [27]

Answer:

83

Step-by-step explanation:

its a guess bc its a right triangle and right triangle is 90 degrees minus 7 is 83

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What is 11/12times 13/14
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11/12 is .92 and 13/14 is .93 multiply them together and get .85 roughly
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