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Ira Lisetskai [31]
3 years ago
10

C) The phone case you want to buy is marked down 30%, and you have a 25% off

Mathematics
2 answers:
mestny [16]3 years ago
6 0
Answer:
Yes you can find the original price which is 570
Explanation:
Since it is already marked down 30% you would calculate that
42/.30=140
Then because you have a 25% coupon you would calculate
140/.25=560
Nimfa-mama [501]3 years ago
5 0

Answer: Yes, you can find the original price of the phone case. The phone case was $560

Step-by-step explanation:

42.00 divided by 25% is $168

$168 divided by 30% is $560

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Here is your answer

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Dave’s Automatic Door, referred to in Exercise 29, installs automatic garage door openers. Based on a sample, following are the
HACTEHA [7]

The question is not complete and the full question says;

Calculate the (a) range, (b) arithmetic mean, (c) mean deviation, and (d) interpret the values. Dave’s Automatic Door installs automatic garage door openers. The following list indicates the number of minutes needed to install a sample of 10 door openers: 28, 32, 24, 46, 44, 40, 54, 38, 32, and 42.

Answer:

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D) This is well written in the explanation.

Step-by-step explanation:

A) In statistics, Range = Largest value - Smallest value. From the question, the highest time is 54 minutes while the smallest time is 24 minutes.

Thus; Range = 54 - 24 = 30 minutes

B) In statistics,

Mean = Σx/n

Where n is the number of times occurring and Σx is the sum of all the times occurring

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Σx = 28 + 32 + 24 + 46 + 44 + 40 + 54 + 38 + 32 + 42 = 380

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C) Mean deviation is given as;

M.D = [Σ(x-x')]/n

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The number of minutes the time deviates on average from the mean of 38 minutes is 7.2 minutes

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Step-by-step explanation:

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Pachacha [2.7K]

Answer:

Hey!

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Step-by-step explanation:

Also can be written as 41/8!

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