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Roman55 [17]
3 years ago
6

The owner of a small store buys coats for ​$55.00 each. Answer parts a and b. a. He sells the coats for ​$77.00 each. What perce

nt of the purchase price is the sale​ price? The sale price is 140​% of the purchase price. b. The owner increases the sale price by the same percent that you found in part a when he buys jackets for ​$35 and sells them. How many jackets must the owner buy for the total jacket sales to be at least ​$340​?
Mathematics
1 answer:
lapo4ka [179]3 years ago
6 0

Th owner must buy 7 Jackets

Step-by-step explanation:

a. Purchase price=$55 , Sell Price= $77

  Sell Price = $55+$22

                   = Purchase price + 40*55/100

                   =Purchase price + 40% of Purchase price

                    =140% of purchase price

b. Purchase Price=$35

    Sell price=140%of $35

                    =140*$35/100

                    =$49

Number of Jackets required for the total sale to be $340 = $340/$49

                                                                                                =6.94

So We get the result by rounding off because Jackets cannot be in fraction, which is 7

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The data set of the diameters of the metal cylinders manufactured an automatic machine has sample size of n=29, mean of x= 49.98
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Answer:

we say for  μ = 50.00 mm we be 95% confident that machine calibrated properly with ( 49.926757  ,  50.033243 )

Step-by-step explanation:

Given data

n=29

mean of x = 49.98 mm

S = 0.14 mm

μ = 50.00 mm

Cl = 95%

to find out

Can we be 95% confident that machine calibrated properly

solution

we know from t table

t at 95% and n -1 = 29-1 = 28 is  2.048

so now

Now for  95% CI for mean is

(x - 2.048 × S/√n  ,  x + 2.048 × S/√n )

(49.98 - 2.048 × 0.14/√29  ,  49.98 + 2.048 × 0.14/√29 )

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8 0
3 years ago
Which of the following represents the amount a customer pays including the tip of 15% if the bill was dollars? Select all that a
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Answer:

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2 years ago
A right prism has height 7½ and triangular bases with sides of length 5, 12, and 13 What is the: Total Surface Area of the Prism
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Given:

A right prism has height 7½ and triangular bases with sides of length 5, 12, and 13.

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The total surface area of the prism.

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The area of the base is equal to the area of the top, i.e., A_2=30 sq units.

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The curved surface area of the prism is

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