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3 years ago

Please help Much appreciated

Mathematics

1 answer:

Lostsunrise [7]3 years ago

8 0

Answer:

$6x^3+3x-6$

Step-by-step explanation:

$(4x^3-2x-9)+(2x^3+5x+3)$

Open up the parentheses

$= 4x^3-2x-9+2x^3+5x+3$

Combine like terms

$= 4x^3-2x-9+2x^3+5x+3\\= 4x^3+2x^3-2x+5x-9+3\\= 6x^3+3x-6$

I hope this helps!

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3 years ago

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Suppose that 950 couples each have a baby find the mean and standard deviation for the number of boys in the 950 babies

nydimaria [60]

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<h3>How to determine the mean and the standard deviation?</h3>

From the complete question, we have:

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The mean is then calculated as:

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2 years ago

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3 years ago

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3 years ago

Please help Much appreciated ​

Please help Much appreciated