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2 years ago

18 is 25% of what number? A) 36

Mathematics

2 answers:

Lostsunrise [7]2 years ago

8 0

Answer:

The answer to your question is the letter C. 72

Step-by-step explanation:

Data

Number 18

Percent = 25%

Number 2 = ?

Percent 2 = 100%

To solve this problem, use proportions and cross multiplication. 18 is 25% the unkown number is 100%.

18 ------------------- 25%

x ------------------- 100%

x = (100 x 18) / 25

x = 1800/25

x = 72

Nezavi [6.7K]2 years ago

5 0

Answer:

c) 72

Step-by-step explanation:

multiply 18 by 4

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3 years ago

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cricket20 [7]

Answer:

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Step-by-step explanation:

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3 years ago

The ratio of the price of a used washer to a new one is 1:3. If the new washer cost $720 how much could you resell it used?

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4 0

2 years ago

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Leokris [45]

Answer:

57,505,708 x .165 =9488441.82 NA

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Step-by-step explanation:

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2 years ago

Winning the jackpot in a particular lottery requires that you select the correct four numbers between 1 and 42 and, in a separa

NARA [144]

Answer:

$\dfrac{1}{3,357,900}$

Step-by-step explanation:

There are

$C^{42}_4=\dfrac{42!}{4!(42-4)!}=\dfrac{42!}{4!\cdot 38!}=\dfrac{38!\cdot 39\cdot 40\cdot 41\cdot 42}{2\cdot 3\cdot 4\cdot 38!}=39\cdot 10\cdot 41\cdot 7=111,930$

different ways to select the four numbers between 1 and 42. Only one of this ways is correct (successful to win).

There are 30 different ways select the single number between 1 and 30. Only one of them is correct.

The probability of winning the jackpot is

$\dfrac{1}{111,930}\cdot \dfrac{1}{30}=\dfrac{1}{3,357,900}$

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2 years ago

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