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Pie
3 years ago
7

How do i rename 2/7 and 10/21 and whats the most common denominator for them

Mathematics
2 answers:
emmainna [20.7K]3 years ago
6 0

Answer:

just multiply 7 by 21 and 21 by 7

like

2*21/7*21. + 10*7/21*7

41/147+ 70/147

111/147. Ans

Iteru [2.4K]3 years ago
4 0

The most common denominator for them is the LCM which is 21

Now

2/7 = 2/7×3/3

= 6/21

Therefore 6/21 and 10/21

Must click thanks and mark brainliest

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A local salesman receives a base salary of $975 monthly. He also receives a commission of 7% on all sales over $1250. How much w
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Answer:

  $17,321.43

Step-by-step explanation:

The amount of monthly income from commissions would have to be ...

  $2100 -975 = $1125

This is 7% of sales over $1250, so the sales (s) would need to be ...

  1125 = 0.07(s -1250)

  1125 = .07s -87.50 . . eliminate parentheses

  1212.50 = 0.07s . . . . add 87.50

  17,321.43 = s . . . . . . . divide by 0.07

He would have to sell $17,321.43 in a month if he needed an income of $2100.

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3 years ago
Rút gọn biểu thức <br> x^2-3/x+√3
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Answer:

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Step-by-step explanation:

7 0
3 years ago
Before a new video game is released, it is tested by a number of volunteer gamers. During testing, the experimental probability
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Answer:

2000 players will complete the game with a perfect score.

Step-by-step explanation:

The testing phase tells us that \frac{1}{500} is the probability that a person will finish with a perfect score.

This means 1 out of 500 people will be able to finish with perfect score.

Now,

the game is given to 1,000,000 (1 million) people and how much do we expect to finish with perfect score?? Simple! It would be  \frac{1}{500}the of 1 million!

We do the calculation shown below:

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3 0
4 years ago
Read 2 more answers
Clairemont runs 10 km in 1 hour. how many kilometers does she run in half and hour? in 2 1/2 hours?
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She would run 15 km in an hour and a half and 25 km in 2 1/2 hours
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3 years ago
Researchers found a linear relationship between tail-feather length (in mm) and weight (in g) in a random sample of 20 male long
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Answer:

   

Step-by-step explanation:

As far as I know, this question is not correct. I have the searched the internet and found a similar question which makes sense. In the correct question, 95% Confidence Interval is already given calculated from the software and

<em>95% prediction interval is asked (PI) for the weight of one male long tailed finch weighing 20 g.</em>

We have this data given in the correct question found on internet. And they have calculated this data using software:

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Fit = 92.34

SE Fit = 5.26

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4 0
3 years ago
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