3 years ago

Translate: Thirty less a number is equal to the product of 2 and the sum of the number and 6

Mathematics

2 answers:

algol133 years ago

8 0

30-x=2(x+6)
30 less a number means 30-x and the sum of the number and 6 is x+6

Airida [17]3 years ago

8 0

Answer:

Traslate:

30 - a = 2(a+6)

The number is:

Step-by-step explanation:

30 - a = 2(a+6)

30 - a = 2*a + 2*6

30 - a = 2a + 12

30 - 12 = 2a + a

18 = 3a

a = 18/3

a = 6

Check:

30 - 6 = 2(6+6)

24 = 2*12

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A local library claims it has 2.73x103 books. If there are 42 people in the building, how many books per capita are there?

Marizza181 [45]

Answer:

63 books per capita in the library

Step-by-step explanation:

Given

$Books = 2.73 * 10^3$

$People = 43$

Required

Determine the book per capita

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$Average = \frac{Books}{People}$

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$Average = \frac{2.73 * 1000}{43}$

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Hence;

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