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saul85 [17]
3 years ago
12

In one day, a store sold 3/5 with as many DVDs as Blu-ray Discs. The total number of DVDs and Blu-ray disc sold that day was 472

how many DVDs were sold
Mathematics
1 answer:
never [62]3 years ago
8 0
You multiply 3/5 to 472 and the answer will be 283.2
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Which of the following expressions are equivalent to 30 - 8x - 6 - 5x?
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The first term of an arithmetic sequence is 1 and the sum of the first four terms is 100. Find the first four terms ​
7nadin3 [17]

Answer:

1, 17, 33, 49

Step-by-step explanation:

given the first term is 1 then the next 3 terms are

1 + d, 1 + 2d, 1 + 3d ( d is the common difference )

the sum of the first 4 terms is 100 , then

1 + 1 + d + 1 + 2d + 1 + 3d = 100 , that is

4 + 6d = 100 ( subtract 4 from both sides )

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3 0
2 years ago
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What are the zeros of the function f(x) = x2 + 5x + 5 written in simplest radical form?
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Step-by-step explanation:

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Therefore, the zeroes would be:

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Answer:

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The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

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The margin of error is:

M = T\frac{s}{\sqrt{n}}

In which s is the standard deviation of the sample and n is the size of the sample. For this question, we have s = 5, n = 20. So

M = T\frac{s}{\sqrt{n}}

M = 1.7291\frac{5}{\sqrt{20}}

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