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Ipatiy [6.2K]
3 years ago
5

Which pair of expressions is equivalent?

Mathematics
2 answers:
pochemuha3 years ago
6 0
4. 3(4n+2) and 6(2n+1)
alexira [117]3 years ago
4 0

Answer:

3(4n+2)is equivalent to6(2n+1)

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18/4 leave your answer in fraction​
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18/4

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One printing press can print the whole school newspaper in 12 hours, while another press can print in 18 hours. How long will th
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7 Hours 12 Minutes

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So they one of the printer increases at a rate of 1/12 and the other increases at a rate of 1/18. Since you don't know the time it actually takes, you will replace both numerators with and x. (x/12 and x/18). You want to set these up so that they are adding. (x/12 + x/18=1). Since you're adding, you want to change it to the same denominator. The lowest is 36 so you multiply x/12 by 3/3 (so you don't unbalance the equation) and x/18 by 2/2. You'll end up with 3x/36 + 2x/36= 1 which will simplify to 5x/36=1. Multiply each side by 36 to leave the variable by itself. It becomes 5x=36 and when you divide it by 5 you get 7.2. So it's seven and .2 hours, which is equivalent to7 and 1/5 of an hour or 7 hours and 12 minutes.

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2 years ago
Which undefined term is needed to define a circle?
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3 years ago
Find g(x), where g(x) is the reflection across the y-axis of f(x)= –9|x–10|+1.
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Answer:

To reflect a graph, f(x) over the x-axis, you take -f(x).

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Step-by-step explanation:

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