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saul85 [17]
3 years ago
5

Estimate the sum 7.36 + 9.47​

Mathematics
1 answer:
arsen [322]3 years ago
4 0

Answer:

16.83

Step-by-step explanation:

7.36

+ 9.47

----------

16.83

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Find the unknown value
Law Incorporation [45]
You have to cross multiply
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4 0
3 years ago
-11+3(b+5)=7 what is b
evablogger [386]

Answer:

b=1

Step-by-step explanation:

-11+3(b+5)=7

-11+3b+15=7

-11+15+3b=7

4+3b=7

3b=7-4

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8 0
2 years ago
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Find four fractions between 1/10 and 1/8
Alex17521 [72]

9514 1404 393

Answer:

  5/48, 5/46, 5/44, 5/42

Step-by-step explanation:

We can choose unit fractions with denominators between 8 and 10, separated by (10-8)/5 = 0.4 units:

  1/8.4 = 5/42

  1/8.8 = 5/44

  1/9.2 = 5/46

  1/9.6 = 5/48

__

<em>Check</em>

  • 1/8 = 0.125
  • 5/42 ≈ 0.119
  • 5/44 ≈ 0.114
  • 5/46 ≈ 0.109
  • 5/48 ≈ 0.104
  • 1/10 = 0.100

_____

<em>Additional comment</em>

There are an infinite number of such fractions. We are given unit fractions with different denominators, so it works reasonably well to choose denominators between those given. Then the trick is to convert the fraction to a ratio of integers. In this case, multiplying by (5/5) does the trick.

__

Another approach is to write the fractions with a common denominator, then choose numerators between the ones given. For example, 1/10 = 4/40, and 1/8 = 5/40, so you could write some fractions with numerators between 4 and 5. Possibilities are 4.1/40 = 41/400, 4.3/40 = 43/400, 4.7/40 = 47/400, 4.9/40 = 49/400.

6 0
3 years ago
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