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3 years ago

Can someone help me answe this last quiz thank you

Mathematics

2 answers:

Irina18 [472]3 years ago

8 0

Answer:

Its given 5²×3²

Lets first find the squres of 5&3 and then multiply them.

As 5×5 is 5² we can do like done below

⇒(5×5)×(3×3)

⇒25×9

⇒225

Therefore the value you need to enter is 225

nlexa [21]3 years ago

6 0

Answer:

225

Step-by-step explanation:

5^2 * 3^2

(5 * 5) * (3 * 3)

25 * 9

225

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Answer:

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Step-by-step explanation:

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2 years ago

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3 years ago

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3 years ago

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DaniilM [7]

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Below

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5 0

3 years ago

In a class of 50 students, everyone has either a pierced nose or a pierced ear. The professor asks everyone with a pierced nose

Tems11 [23]

Answer: 3

Step-by-step explanation:

Let E be the event of that student pierces ear and N be the event of that student pierces nose.

Given: $n(E\cup N=50)$

$n(E)=46\\\\n(N)=7$

For any two event A and B, we have

$n(A\cup B)=n(A)+n(B)-n(A\cap B)$

Similarly , $n(E\cup N)=n(E)+n(N)-n(E\cap N)$

$50=46+7-n(E\cap N)\\\\\Rightarrow\ n(E\cap N)=53-50=3$

Hence, 3 students have piercings both on their ears and their noses.

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3 years ago