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NISA [10]
2 years ago
15

Help!! this is due Friday and I forgot how to do math​

Mathematics
2 answers:
Doss [256]2 years ago
6 0
Answer is A for you :)
Hatshy [7]2 years ago
5 0
I pretty sure it is A I looked it up.
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Calculate the marked price(original price)if after 20% discount, the price of an article.
Elina [12.6K]

Answer: An article was sold at a 20% discount, at Rs. 400. What was its marked price?

Let M denotes the required marked price of the given article.

Hence from above data we get following relation,

(1 - 20/100)*M = 400

or (4/5)*M = 400

or M = (5/4)*400 = 500 (Rs) [Ans]

Step-by-step explanation:

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3 years ago
I don't know how to do this
vesna_86 [32]
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3 years ago
In a class there are 15 students. 8 of them like playing soccer, 6 of them like swimming, and 2 like both and swimming and playi
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2 years ago
If a population is known to be normally distributed, what can be said of the sample distribution of the sample mean drawn from t
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8 0
3 years ago
The length of time a person takes to decide which shoes to purchase is normally distributed with a mean of 8.54 minutes and a st
Minchanka [31]

Answer:

0.0323 = 3.23%. Is unusual

Step-by-step explanation:

Using the normal distribution we can find z value with the mean and standard deviation as follows. x is the value we want to know its probability

z = (x - mean)/standard deviation

z = (5-8.54)/1.91

z = -1.85

Using z tables for normal distribution, for z = 1.85, we have an area under the curve of 0.9677. Since we want to know the probability for 5 minutes or less, we have to substract from

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An event with a probability less than 5% is considered unusual.

8 0
3 years ago
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