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Deffense [45]
3 years ago
14

I will give brainliest for question! How many nonzero terms are in the expansion of (x+4)(2x^2+3x+9)-3(x^3-2x^2+7x)?

Mathematics
1 answer:
nataly862011 [7]3 years ago
4 0

Answer:

Four

Step-by-step explanation:

Let's expand and see how many nonzero terms:

⇒ (x+4)(2x²+3x+9)-3(x³-2x²+7x)=

⇒ 2x³ + 3x² + 9x + 8x² + 12 + 36 - 3x³ + 6 x² - 21 x=

⇒ - x³ + 17x² - 12x + 12

As we see the expression has four nonzero terms

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y varies inversely with x, and k (the constant of variation) = 23. What is the value of y when x = 7? Round to the nearest tenth
Natasha2012 [34]
Hello!

<span>The constant of variation is xy. XY=23. If X=7 then Y=23/7.
</span>
So as we can see, the stated inverse variation can be represented as the equation y = k/x. ===> k = 23 & x = 7 ⇒ y = 23/7. <====

I Hope my answer has come to your Help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead! :)

(Ps. Mark As Brainliest IF Helped!)
8 0
3 years ago
How many square feet of outdoor carpet will we need for this hole? HELP PLS!!!
Otrada [13]

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Step-by-step explanation:

By saying square feet it's indicated that you mean the area of this irregular figure.

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7 0
3 years ago
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sergey [27]
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5 0
3 years ago
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lina2011 [118]

Answer:

I usually explain even in the answer.

So we use som\sqrt{x}ething called distance formula which is branched of Pythagorean theorem.

But we dont need to as it just makes it more complicated. We need to find split into 2 vectors, one vertical, and horizontal. The horizontal is 5 long.

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25+1 = 26, so the answer is √26

I am pretty sure answer is right. Always take abolute value

<u>√26</u>

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Minchanka [31]

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Step-by-step explanation:

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4 years ago
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