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Strike441 [17]
3 years ago
13

Close Review Print Review

Mathematics
1 answer:
lara31 [8.8K]3 years ago
5 0

Answer:

39 = r-13

Step-by-step explanation:

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A refrigerator is priced 525.50. There is a 6% sales tax rate. What is the sales tax for the refrigerator in dollars and cents?
SVETLANKA909090 [29]
It would be 525.50*0.06=31.53
And the total would be 525.50+31.53=557.03
Hope this helps
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Abag is filled with green and blue marbles. There are 49 marbles in the bag. If there are 17 more green marbles than blue marble
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32 marbles are Green Marbles and 17 Blue Marbles.

Step-by-step explanation:

49 - 17 = 32

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105, D, 13,9899/138530? not sure on that one

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8. How does a tree diagram give you the
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Answer:

Read below.

Step-by-step explanation:

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3 years ago
A research study investigated differences between male and female students. Based on the study results, we can assume the popula
oksian1 [2.3K]

Answer: 0.0548

Step-by-step explanation:

Given, A research study investigated differences between male and female students. Based on the study results, we can assume the population mean and standard deviation for the GPA of male students are µ = 3.5 and σ = 0.05.

Let \overline{X} represents the sample mean GPA for each student.

Then, the probability that the random sample of 100 male students has a mean GPA greater than 3.42:

P(\overline{X}>3.42)=P(\dfrac{\overline{X}-\mu}{\dfrac{\sigma}{\sqrt{n}}}>\dfrac{3.42-3.5}{\dfrac{0.5}{\sqrt{100}}})\\\\=P(Z>\dfrac{-0.08}{\dfrac{0.5}{10}})\ \ \ [Z=\dfrac{\overline{X}-\mu}{\dfrac{\sigma}{\sqrt{n}}}]\\\\=P(Z>1.6)\\\\=1-P(Z

hence, the required probability is 0.0548.

6 0
3 years ago
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