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Advocard [28]
4 years ago
10

1-2n=-14+n can someone plz solve and explain this promblem

Mathematics
2 answers:
AnnyKZ [126]4 years ago
5 0

Answer:

n=5

Step-by-step explanation:

1-2n=-14+n

Add 2n to each side to get all the "n" on one side

1-2n+2n =-14+n+2n

1 = -14 + 3n

Add 14 to each side to get all the constants on one side

1 +14 = -14 +14 +3n

15 =3n

Divide each side by 3 to isolate n

15/3 =3n/3

5 =n

Lyrx [107]4 years ago
4 0

Answer:

n=5

Step-by-step explanation:

You can combine like terms to isolate n on one side

Add +2n to both sides; 1-2n+2n=-14+n+2n --> 1=-14+3n

Add +14 to both sides; 1+14=-14+14+3n --> 15=3n

Divide both sides by +3; 15/3 =3n/3 --> 5=n

Now you've solved for you variable; n=5

I hope this helps!

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Answer:

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14. PS + PH = HS

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4 0
3 years ago
A shop sells packets of envelopes.
Ivanshal [37]

9514 1404 393

Answer:

  5x +20y = T

Step-by-step explanation:

There are 5 envelopes in each of x small packets, for a total of 5x envelopes in small packets.

There are 20 envelopes in each of y large packets, for a total of 20y envelopes in large packets.

The total number envelopes is then ...

  T = 5x +20y

5 0
3 years ago
8. Olivia's brother is twice her age
slava [35]

The ages of Olivia and her brother are 10 years and 11 years respectively

Let x₁, and x₂ be the ages of Olivia and her brother respectively.

Given that Olivia's brother is twice her age minus 9 years.

⇒ x₂ = 2x₁ - 9 → equation 1

Also given that Olivia's brother is as old as half the sum of the ages of Olivia and both of her 12-year-old twin brothers.

⇒ x₂ = 1/2 × (x₁ + 12) → equation 2

Using equation 1 in equation 2, we get

2x₁ - 9 = 1/2 × (x₁ + 12)

⇒ 4x₁ - 18 = x₁ + 12 (multiplying by 2 on both sides)

⇒ 4x₁ - x₁ = 12 + 18

⇒ 3x₁ = 30

⇒ x₁ = 10 (dividing by 3 on both sides)

Using the value of x₁, in equation 1,

⇒ x₂ = 2(10) - 9

⇒ x₂ = 20 - 9

⇒ x₂ = 11

Therefore the ages of Olivia and her brother are 10 years and 11 years respectively.

Learn more at:

brainly.com/question/28016937

brainly.com/question/28016937

#SPJ9

8 0
1 year ago
What does it mean if your final exam grade is modeled by the function f(x) = 100 - 3.3x?
rjkz [21]

Answer:

i need points

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
the ratio of men to women in a certain factory is 3 to 4. There are 198 men. How many workers are there?
vredina [299]
P r o p o r t i o n s

3:4 = 7

3/198 = 7/x

solve for x using cross multiplying

3/198 = 7/x

198(7) = 3x
1386 = 3x
/3         /3
   462 = x

Therefore, there are 462 workers.

Proof:

3/198 = 4/x
198(4) = 3x
792 = 3x
/3        /3
264 = x

264 + 198 = 462.

264 / 4 = 66
198 / 3 = 66
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8 0
4 years ago
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