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Aliun [14]
3 years ago
8

9 -4n+ 3n = 8n + 3 -3

Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
3 0

Answer:

Answer:

n = 1

Step-by-step explanation:

This equation is just basic alegebra.  First, combine like terms to get

9 - n = 8n.  (Because 3 - 3 = 0, and -4n + 3n = -n.)  Now the equation is much simpiler;  add n to both sides to get 9 = 9n.  Divide 9 by both sides to get that n = 1.  

You can check your answer by plugging 1 in for n.  

9 - 4(1) + 3(1) = 8(1) + 3 - 3

9 - 4 + 3 = 8 + 3 - 3

5 + 3 = 11 - 3

8 = 8

Therefore, n is proven to equal 1.  

Hope this is helpful kid sorry i went very far yesterday hope you can forgive me but Anyways here it is <3

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3 years ago
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3 years ago
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PLZ HELP OR I FAIL MY TEST
Volgvan

Answer:

time upstream=24/8=3 hours

time downstream=24/12=2 hours

Step-by-step explanation:

If R*T=D, and R is speed + or - current, how can you find the rate without the time, and how can you find the time without the rate?

THE KEY WAS WHEN WE WERE TOLD THAT IT TAKES ONE HOUR LONGER TO GO UPSTREAM THAN DOWNSTREAM BECAUSE T=D/R AND WE ARE TOLD THAT:

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Let x=rate of current

distance(d)=rate(r) times time(t) or d=rt or t=d/r

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Now, we are told that time upstream minus one hour equals time downstream. So our equation to solve is:

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CK

10-x=10-2= 8 mph -----------------------speed upstream

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7 0
3 years ago
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Take 0 for example.

It's 0 units away from zero on a number line which

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5 0
3 years ago
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