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3 years ago

5

A number is chosen at random from 1 to 25. Find the probability of not selecting a composite number. plz help

1 answer:

patriot [66]3 years ago

3 0

Answer:

12/25

Step-by-step explanation:

I think it's 12. Hope it helped

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arrange the expressions in the correct sequence to rationalize the denominator of the expression -(2)/(\sqrt(x+y-2)-\sqrt(x+y+2)

cupoosta [38]

We have to rationalize the denominator:
$\frac{-2}{ \sqrt{x+y-2} - \sqrt{x+y+2} } = \\ \frac{-2}{ \sqrt{x+y-2} - \sqrt{x+y+2} }* \frac{ \sqrt{x+y-2}+ \sqrt{x+y+2} }{ \sqrt{x+y-2}+ \sqrt{x+y+2} }= \\ \frac{-2*( \sqrt{x+y-2}+ \sqrt{x+y+2}) }{x+y-2-(x+y+2)}= \\ \frac{-2*( \sqrt{x+y-2}+ \sqrt{x+y+2}) }{x+y-2-x-y-2}= \\ \frac{-2*( \sqrt{x+y-2}+ \sqrt{x+y+2} }{-4}= \\ \frac{ \sqrt{x+y-2}+ \sqrt{x+y+2} }{2}$

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3 years ago

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What is 1/8 divided by 3/4?

nataly862011 [7]

Answer:

1 / 6 is the answer in fraction form and 0 . 16 as decimal form.

Step-by-step explanation:

1 / 8 ÷ 3 / 4

= 1 / 8 × 4 / 3

= 1 / 2 × 1 / 3

= 1 / 6

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6 0

3 years ago

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Setler [38]

Answer: 2

Step-by-step explanation: because it timed the seconde one so that is why its 2

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3 years ago

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gayaneshka [121]

Answer:

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Step-by-step explanation:

Well a cube is all identical So followiung the volume for a cube formula

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3 years ago

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maw [93]

Answer:

D

Step-by-step explanation:

Because 90/5=18

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