3 years ago

A bag contains 3 red marbles, 4 black marbles, and 5 yellow marbles. What are the chances of picking a marble that is not black?

Mathematics

2 answers:

lorasvet [3.4K]3 years ago

8 0

I believe the answer is 8 out of 10

hope this helps!

Leni [432]3 years ago

8 0

I think it's 8 out of 12

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Stolb23 [73]

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4 years ago

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DochEvi [55]

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Step-by-step explanation:

Let us revise some rules of the exponents

$a^{m}*a^{n}=a^{m+n}$
$\frac{a^{m}}{a^{n}}=a^{m-n}$
$(a^{m})^{n}=a^{mn}$
If $a^{m}=a^{n}$ , then m = n

∵ $(d^{6})^{5}=d^{m}$

- By using the 3rd rule above in the left hand side

∴ $(d^{6})^{5}=d^{6*5}$

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- Substitute the left hand side by $d^{30}$

∴ $d^{30}=d^{m}$

- By using the 4th rule above

∴ 30 = m

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Learn more:

You can learn more about rule of exponents in brainly.com/question/5639299

#Learnwithbrainly

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