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Pachacha [2.7K]
2 years ago
8

Emily needs enough Fabric for 3 1/2 hats. Since she has half a hat done. If each bag requires 1 2/7 ft of Fabric, how much fabri

c will she need to make the 3 1/2 hats?
Mathematics
1 answer:
kow [346]2 years ago
5 0

first off let's convert the mixed fractions to improper fractions.

\stackrel{mixed}{3\frac{1}{2}}\implies \cfrac{3\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{7}{2}} ~\hfill \stackrel{mixed}{1\frac{2}{7}}\implies \cfrac{1\cdot 7+2}{7}\implies \stackrel{improper}{\cfrac{9}{7}}

she already did half a hat, so we can say   \cfrac{7}{2}-\cfrac{1}{2}\implies \cfrac{7-1}{2}\implies 3

so she only needs enough fabric to make 3 more full hats, we know each one uses 9/7 ft, so

3\cdot \cfrac{9}{7}\implies \cfrac{27}{7}\implies 3\frac{6}{7}

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Answer:

No, the on-time rate of 74% is not correct.

Solution:

As per the question:

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The proportion of the population, P' = 74% = 0.74

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We need to find the probability that out of 60 trains, 38 or lesser trains arrive on time.

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Therefore, the probability is given by:

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3 years ago
If $64,000 is invested in an IRA account with an annual interest rate of 8% compounded once a year, what is the value of the acc
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