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Mekhanik [1.2K]
3 years ago
12

20 POINTS AND I WILL MARK YOU BRAINISET!!!!! PLEASE COMPLETE ASAP!!

Mathematics
2 answers:
Vera_Pavlovna [14]3 years ago
5 0

Answer:

D) The same as

Step-by-step explanation:

both 4x and 2x have x at the end

x equals x

Mars2501 [29]3 years ago
5 0

Answer:

D.same as  cause both the 4 and the 2 have x and x do equal x

Step-by-step explanation:

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3 years ago
The distribution of the amount of money spent by students on textbooks in a semester is approximately normal in shape with a mea
zheka24 [161]

Answer:

$301 - $397

Step-by-step explanation:

Using the Empirical rule

1) 68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ .

2)95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .

3)99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ .

From the above question,

Mean = 349 , standard deviation = 24.

Confidence interval = 95%

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= 349 - 48

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= 397

Therefore, according to the standard deviation rule, approximately 95% of the students spent between $301 and $397 on textbooks in a semester.

8 0
3 years ago
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Ksju [112]
I believe the answer is “A”
7 0
3 years ago
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What is the mean of the following set of data? Round your answer to two decimal places.
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The mean is 73.44<span>

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You could've found this by adding up all the values in the data set, then dividing by how many numbers were in the data set!

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7 0
3 years ago
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Explanation : We know that Randy's house number is either 29,39,59, or 79. Since his house is a composite number, we must pick the number from the following that is a composite number. 39 is a composite number, because 3 and 13 go into it
7 0
3 years ago
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