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inysia [295]
3 years ago
7

Halle's mom sent her to the store to buy some peaches and plums . The total cost of the peaches was $1.88 .The plans cost zero d

ollars The plums cost $0.33 each . Halle paid $3.86 and off for the peaches and plums . How many plums did she buy
Mathematics
1 answer:
VMariaS [17]3 years ago
4 0

Answer:

Halle bought 6 plums from the store.

Step-by-step explanation:

Given:

total cost of the peaches = $1.88

Cost of 1 Plum = $0.33

Total Money paid = $3.86

We need to find the number of Plums.

Let the number of plums be x.

Now we know that Total money paid is equal to Cost of peaches plus Cost of each Plum multiplied with number of plums.

Hence the expression can be framed as;

1.88+0.33x=3.86

Now Solving the above expression to find the value of x;

1.88+0.33x=3.86\\0.33x = 3.86-1.88\\0.33x=1.98\\\\x = \frac{1.98}{0.33} = 6

Hence Halle bought 6 plums from the store.

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Answer:

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Step-by-step explanation:

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So, a 90% confidence interval for the population mean, \mu is;

P(-1.672 < t_5_9 < 1.672) = 0.90  {As the critical value of t at 59 degrees of

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P( -1.672 \times {\frac{s}{\sqrt{n} } } < {\bar X-\mu} < 1.672 \times {\frac{s}{\sqrt{n} } } ) = 0.90

P( \bar X-1.672 \times {\frac{s}{\sqrt{n} } } < \mu < \bar X+1.672 \times {\frac{s}{\sqrt{n} } } ) = 0.90

<u>90% confidence interval for</u> \mu = [ \bar X-1.672 \times {\frac{s}{\sqrt{n} } } , \bar X+1.672 \times {\frac{s}{\sqrt{n} } } ]

                                       = [ 0.16-1.672 \times {\frac{0.08}{\sqrt{60} } } , 0.16+1.672 \times {\frac{0.08}{\sqrt{60} } } ]

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Therefore, a 90% confidence interval for the mean BAC in fatal crashes in which the driver had a positive BAC is [0.143, 0.177] .

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