There are 20 students in a math class. Thirty percent of the

Mathematics

1 answer:

Mekhanik [1.2K]3 years ago

3 0

Answer:

Step-by-step explanation:

20% of 30 is 6 are randomly selected.

30 choose 6 = 30! / (30-6)! 6!

= 30! / 24!6!

= 30 * 29 * 28 * 27 * 26 * 25

--------------------------------- <-- 24! cancels

6 * 5 * 4 * 3 * 2 * 1

= 29 * 28 * 27 * 26 * 25

---------------------------------- <--- 30 = 6 * 5 cancels

4 * 3 * 2 * 1

= 29 * 7 * 9 * 13 * 25 <-- 4 cancels 28, 3 cancels 27, 2 cancels 26

= 593775

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37 is ____ % of 148; 148 is ____ % of 37 fill in the blanks

soldier1979 [14.2K]

37 is 25% of 148; 148 is 400% of 37

Step-by-step explanation:

Let us solve the questions one by one

"37 is ____ % of 148"

Let x be the percentage

Then

$37 = x\%\ of\ 148\\37 = 148x\\x = \frac{37}{148}\\x = 0.25$

to convert in percentage, multiplying by 100

= 25%

"148 is ____ % of 37"

Let y be the percentage

then

$148 = y\%\ of\ 37\\148 = 37y\\y = \frac{148}{37}\\y = 4$

To convert into percentage, multiplying by 100

= 400%

Hence,

37 is 25% of 148; 148 is 400% of 37

Keywords: Percentage, percent

Learn more about percentage at:

#LearnwithBrainly

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3 years ago

Using this number cube and spinner, which simulation would help you answer this question?

Katen [24]

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Probability of Wednesday:

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3 years ago

Given: 8x-61=17, prove: 39/4

Degger [83]

Answer:

The solution is $x = \frac{39}{4}$