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marshall27 [118]
3 years ago
8

Jackie ordered a set of wood and metal clothes pins. Of the 276 pins, 172 were wood. What percentage of the clothes pins were me

tal? Round to the nearest hundredth.
Mathematics
1 answer:
timurjin [86]3 years ago
8 0

We know that 172 of them were wood, so the rest are metal. To find that number we do:

276 - 172 = 104 metal pins.

To find the percentage that they were metal, take the number of metal pins and divide by the total number of pins:

104/276 is about 0.3768.

Multiply this by 100:

37.68

So, the percent of metal pins is 37.68%.

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A: Right

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3 years ago
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Answer:

A tree with a height of 6.2 ft is 3 standard deviations above the mean

Step-by-step explanation:

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an X value is found Z standard deviations from the mean mu if:

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In this case we have:  \mu=5\ ft\sigma=0.4\ ft

We have four different values of X and we must calculate the Z-score for each

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Z=\frac{X-\mu}{\sigma}\\Z=\frac{5.4-5}{0.4}=1

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Z=\frac{X-\mu}{\sigma}\\Z=\frac{4.6-5}{0.4}=-1

Therefore, a tree with a height of 4.6 ft is 1 standard deviation below the mean .

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For X =5.8 ft

Z=\frac{X-\mu}{\sigma}\\Z=\frac{5.8-5}{0.4}=2

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Therefore, a tree with a height of 6.2 ft is 3 standard deviations above the mean.

6 0
3 years ago
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2 years ago
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Lana71 [14]

Answer:

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