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densk [106]
3 years ago
13

Juan's family and Ethan's family go to a food stand.

Mathematics
1 answer:
Rasek [7]3 years ago
3 0

Answer:

1 hotdog is $3.5.

1 drink is $2.

Step-by-step explanation:

18.50= 3x+4y(times 5)

25.50=5x+4y(times -3)

92.5=15x+20x

-76.5=-15x+-12y

16=-8y

2=y

18.50=3x+4(2)

10.50=3x+8

10.50=3x

3.5=x

           

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B) A car travels 3.5 miles in 5 minutes work out the speed in miles per hour
Nady [450]

Answer:

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Step-by-step explanation:

to get 5 to 60 we need to times it by 12

so we do

3.5 x 12=42

so itis 42/60

4 0
3 years ago
What is the distance between negative 2.25 and positive 2.75
VikaD [51]

Answer:

5

Step-by-step explanation:

The easiest way is to subtract.

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3 0
4 years ago
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Answer:

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3 years ago
Me need help on this
Paul [167]

Answer:

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3 years ago
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lara31 [8.8K]
F(x)=(x-8)/(x+7). g(x)=(-7x-8)/(x-1). Plug in g(x) into f(x), f(g(x))=[(-7x-8)/(x-1)-8]/[-7x-8)/(x-1)+7], which can be simplified as (-7x-8-8x+8)/(-7x-8+7x-7)=-15x/-15=x. Plug in f(x) into g(x), g(f(x))=[-7*(x-8)/(x+7)-8]/[(x-8)/(x+7)-1]=(-7x+56-8x-56)/(x-8-x-7)=-15x/-15=x, as desired.
5 0
3 years ago
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