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maria [59]
3 years ago
7

The sum of three natural numbers is 720. The second number is 2 times larger than the first and 105 smaller than the third numbe

r.what is the difference between the largest number and the smallest number?

Mathematics
1 answer:
Klio2033 [76]3 years ago
8 0
Here is the solution

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How many 2 1/2 acre plots can be made out of a 35-acre field
Hoochie [10]

35 divided by 2 1/2

change 2 1/2 to an improper fraction

2 1/2 = 5/2

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Can someone help with these two questions? dont worry if its wrong!
nevsk [136]

Answer:

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Step-by-step explanation:

1) one batch=2 1/2 cup flour

therefore batch required in 3 1/2 batch= 5/2×7/2=35/4

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6 0
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The scores on a psychology exam were normally distributed with a mean of 60 and a standard deviation of 10 . A failing grade on
tensa zangetsu [6.8K]

Answer:

The cutoff for a failing score was 40,

Approximately 2.3% of the students failed. ​

Step-by-step explanation:

Given,

Mean, \mu=60

Standard deviation, \sigma=10

Let x represents the cutoff for a failing score,

Thus, according to the question,

\frac{x-\mu}{\sigma}=-2

\frac{x-60}{10}=-2

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Thus, the cutoff for a failing score is 40,

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Hence, Approximately 2.3 % of the students failed. ​

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