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4 years ago

For the functions f(x)=8 x 2 +7x and g(x)= x 2 +2x , find (f+g)(x) and (f+g)(3)

Mathematics

1 answer:

Nuetrik [128]4 years ago

4 0

Answer:

(f+g)(x)= 9x² + 9x

(f+g)(3) = 108

Step-by-step explanation:

f(x)=8x² +7x

g(x)= x² +2x

(f+g)(x) = f(x) + g(x) = 8x² +7x +x² +2x = 9x² + 9x

(f+g)(x)= 9x² + 9x

(f+g)(3)= 9*3² + 9*3 = 108

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Read 2 more answers

You are researching the price of MP3 players. You found an average price of $58.80. One MP3 player costs $56 and another costs $

Butoxors [25]

The price of third MP3 player is $58.40

Step-by-step explanation:

Given,

Cost of one MP3 palyer = $56

Cost of another MP3 player = $62

Average price of MP3 player = $58.80

Let,

Cost of third MP3 player = x

Average = $\frac{Sum\ of\ costs}{Number\ of\ items}$

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Multiplying both sides by 3

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The price of third MP3 player is $58.40

Keywords: average, division

Learn more about division at:

#LearnwithBrainly

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3 years ago

What are 2 ways organisims would be affected by land pollution

rosijanka [135]

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Step-by-step explanation:

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3 years ago

Help please and show work 30 points

grin007 [14]

Answer:

The pair of shoes equal 18.

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Step-by-step explanation:

Let x = shoes

You found the palm trees!

So the top picture would be

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Let's go so the last picture. We now know the shoes.

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x = 3 We found the value of the boat.

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Let x = the chair now

3 + x = 7 Subtract 3 from both sides

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2 years ago