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3 years ago

A storekeeper increased the price of hats by 5%.

Mathematics

1 answer:

Virty [35]3 years ago

8 0

Answer: c = 1.05p

Step-by-step explanation:

Price of the hat = p

Percentage increase in the price of the hat = 5%

The equation to calculate the increase of the total cost, c, of the hat will be:

c = p + (5% × p)

= p + (5/100 × p)

= p + (0.05 × p)

= p + 0.05p

c = 1.05p

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Step-by-step explanation:

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3 years ago

Jake and Gloria are running on the track team. Gloria can run twice as many miles as

Tanzania [10]

Answer:

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Step-by-step explanation:

Use J to represent Jake's miles.

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4 years ago

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4 years ago

9.4 The heights of a random sample of 50 college stu- dents showed a mean of 174.5 centimeters and a stan- dard deviation of 6.9

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Step-by-step explanation:

Since we have given that

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Standard deviation = 6.9 cm

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we need to find the 98% confidence interval.

So, z = 2.326

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$x\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=(174.5\pm 2.326\times \dfrac{6.9}{\sqrt{50}})\\\\=(174.5+2.26,174.5-2.26)\\\\=(176.76,172.24)$

(b) What can we assert with 98% confidence about the possible size of our error if we estimate the mean height of all college students to be 174.5 centime- ters?

Error would be

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8 0

3 years ago

Please show me how you got the answer thanks.

andriy [413]

85/11.9 whatever that works out to

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3 years ago