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borishaifa [10]
3 years ago
15

F(x) = 5x^2 + 9x – 4 g(x) = – 8x^2 – 3x – 4 Find (f + g)(x).

Mathematics
1 answer:
svp [43]3 years ago
3 0

Answer:

(f + g)(x) = – 3x^2 + 5x - 8

Step-by-step explanation:

(f + g)(x) = f(x) + g(x)

= 5x^2 + 9x – 4 + (– 8x^2 – 3x – 4)

= 5x^2 + 9x – 4 – 8x^2 – 3x – 4

Combine

= – 3x^2 + 5x - 8

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MAXImum [283]
Alright, so the first thing I would do is find the LCM of the dividends, which is 20.  So we have 10 15/20 and 6 16/20.  You can either leave it there and just carry the one (20 in this case) for 3 19/20.
If you multiply 10 by 20 and add 15, or 6 by 20 and add 16 (which I think is easier) you get 215/20 - 136/20 = 79/20.  It can be simplified from here if you teacher wants it in the future.
7 0
3 years ago
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Mrs.Stone is three times older than her younger daughter, Joyce, but only two times older than her older daughter, Alex. How old
olchik [2.2K]

Answer:

54 years

Step-by-step explanation:

Joyce age = x

Alex age = y

3x = 2y - - - (1)

y - 9 = 2(x - 9)

y - 9 = 2x - 18

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y = 2x - 9 - - (2)

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18 = x

Hence,

Mrs stone is 3 * 18 = 54 years

5 0
3 years ago
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Norma-Jean [14]
I’m sorry i don’t know but i’m thinking it’s B not sure tho
6 0
3 years ago
Solve for the value of n <br> (9n) (8n+8)
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Answer:

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Step-by-step explanation:

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3 0
3 years ago
mia wants to earn 2500 in her job at a bycicle store she is paid 55 for every bycicle she tunes up the minimum number of bycicle
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5 0
3 years ago
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