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d1i1m1o1n [39]
3 years ago
15

4n-3=-2n+9 What is the value of the variable 'n'?

Mathematics
1 answer:
julsineya [31]3 years ago
7 0
4n - 3= -2n + 9
add 3n to both sides

4n= -2n +12
add 2n to both sides

6n= 12
divide both sides by 6

n= 2

Check:
4n-3=-2n+9
4(2)-3= -2(2)+9
8-3= -4+9
5=5


Hope this helps! :)
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Uma loja de equipamentos eletrônicos anunciou um celular com duas opções de venda. Na primeira opção, o pagamento pode ser feito
Lena [83]

Responda:

Preço = $ 400

Explicação passo a passo:

Dado que:

Primeira opção :

Pagamento em 5 investimento igual

Segunda opçao :

Pagamento feito em 8 iguais. Investimento

O preço por parcela do primeiro investimento é 30 a mais do que cada um do segundo

Deixe o preço do telefone = p

Valor por prestação = x

Segunda parcela:

Preço = 8x

Primeiro :

Valor por parcela = x + 30

P = 5 (x + 30)

Preço = 5x + 150

Portanto, igualando as duas equações:

8x = 5x + 150

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Usando qualquer das equações de preço:

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3 0
3 years ago
The graph represents the normal distribution of recorded weights, in pounds, of cats at a veterinary clinic.
diamong [38]

Answer:

<em>B)</em><em> 8.9 lbs </em>

<em>C)</em><em> 9.5 lbs </em>

<em>D)</em><em> 9.8 lbs </em>

<em>E)</em><em> 10.4 lbs</em>

Step-by-step explanation:

From the graph, 9.5 is the mean of the sample and 0.5 is the standard deviation of the sample.

As we have to find the weights that lie within the 2 standard deviations of the mean i.e

=9.5\pm 2(0.5)

=8.5,10.5

Among the given weights only 8.9 lbs, 9.5 lbs, 9.8 lbs, 10.4 lbs will lie within 2 standard deviations of the mean.


3 0
3 years ago
Read 2 more answers
F(x) = 2x is translated 4 units up
kolbaska11 [484]

 

f(x) = 2x

f(x) = 2x + 4   (Is translated 4 units up.)

6 0
3 years ago
Can someone please help me with this
Kryger [21]

Answer:

1. 96 inches squared

2. h=324

3. 85

Step-by-step explanation:

1. v=lwh

v=8•3•4

v=96

2. 345- 21

h=324

3. 1,012/12

=84.3

hope this helped!

7 0
2 years ago
Pls help I will mark
tatiyna

Answer:

C

Step-by-step explanation:

3 0
2 years ago
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