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hammer [34]
3 years ago
5

Who can help me answer this question ASAP please and thank you please show work

Mathematics
1 answer:
kotegsom [21]3 years ago
4 0

I'll do the first one to get you started

So we have g(f(x)) which means that we start with g(x) and replace the 'x' with 'f(x)' to get g(f(x))

g(x) = ( x - 4 )/2

g(f(x)) = ( f(x) - 4)/2 .... replace every x with f(x)

g(f(x)) = (2x+4-4)/2 .... replace f(x) on the right side with 2x+4

g(f(x)) = (2x+0)/2

g(f(x)) = (2x)/2

g(f(x)) = 1x/1

g(f(x)) = 1x

g(f(x)) = x

Let me know if you need help with the other one.

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Answer:

(23 times 1/3) -5  = 2 2/3

Step-by-step explanation:

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A boy saves 80p a day, How much does it take him to save $40
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50 Days

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2 years ago
At one time the price of gasoline was $1.279 a gallon. Then the price
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5 0
3 years ago
amber wants to put tile on the back special for kitchen counter she will need 36 square feet of tile.she will use basic tile tha
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Answer: Amber use 30 feet of basic tiles and 6 feet of decorative tiles.


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Let x be the foot  of basic tiles and y be the foot of decorative tiles.

Now, according to the question, we have the following equations

x+y=36\\y=36-x\ .......(1)\\\\8x+20y=36\times10\\2x+5y=90.......(2)\ \ \ [\text{divide equation by 4}]

Put y=36-x in (2), we get

2x+5(36-x)=90\\\Rightarrow2x+180-5x=90\\\Rightarrow-3x=-90\\\Rightarrow\ x=30\\\\\Rightarrow\ y=36-30=6

Hence, Amber use 30 feet of basic tiles and 6 feet of decorative tiles.

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