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Korolek [52]
3 years ago
12

When a number is decreased by 54%, the result is 28. What is the original number to

Mathematics
1 answer:
Brums [2.3K]3 years ago
6 0

Answer:

x = 60.9

Step-by-step explanation:

Let x represent the number

x - 54%x = 28

x - 0.54x = 28

0.46x = 28

Divide both sides by 0.46(coefficient of x)

x = 28/0.46

x = 60.86

to the nearest tenth

x = 60.9

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Which expression has the fewest significant figures?
yanalaym [24]

Hello!

Here are some rules to determine the number of significant figures.

  1. Numbers that are not zero are significant (45 - all are sigfigs)
  2. Zeros between non-zero digits are significant (3006 → all are sigfigs)
  3. Trailing zeros are not significant (0.067 → the first two zeros are not sigfigs)
  4. Trailing zeros after a decimal point are always significant (1.000 → all are sigfigs)
  5. Trailing zeros in a whole number are not significant (7800 → the last two zeros are not sigfigs)
  6. In scientific notation, the exponential digits are not significant, known as place holders (6.02 x 10² → 10² is not a sigfig)

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Since these digits are all <em>non-zero</em>, there are 5 significant figures.

B). 5003.1

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C). 360.01

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