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adell [148]
2 years ago
10

Can you help me i have only one day

Mathematics
2 answers:
tangare [24]2 years ago
8 0

Answer:

n = -1.825

Step-by-step explanation:

8n + 16.2 = 1.6 (Given)

8n = -14.6 (Subtract 16.2 on both sides)

n = -1.825 (Divide 8 on both sides)

Taya2010 [7]2 years ago
4 0

Step-by-step explanation:

Move all terms not containing  

n

to the right side of the equation.

Tap for fewer steps...

Subtract  

16.2

from both sides of the equation.

8

n

=

1.6

−

16.2

Subtract  

16.2

from  

1.6

.

8

n

=

−

14.6

Divide each term by  

8

and simplify.

Tap for fewer steps...

Divide each term in  

8

n

=

−

14.6

by  

8

.

8

n

8

=

−

14.6

8

Cancel the common factor of  

8

.

Tap for more steps...

n

=

−

14.6

8

Divide  

−

14.6

by  

8

.

n

=

−

1.825

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Essentially this is asking you to sum the first three values of the geometric series that starts with i being 1 and has the rule of (8(\frac{1}{4})^{i-1}).

Since we must sum the first <em>three </em>geometric values we need to see what the value of i will be for the first three. The sigma notation shows us that the first i will be equal to 1. This means the second i is 2 and the third i is 3.

Knowing this you can plug in the corresponding i values into (8(\frac{1}{4})^{i-1}) and sum it all together

(8(\frac{1}{4})^{1-1}) + (8(\frac{1}{4})^{2-1}) + (8(\frac{1}{4})^{3-1})

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Hope this helped!

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3 years ago
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Oliga [24]
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mario62 [17]

Answer: J = 14.4 cm

Step-by-step explanation:

<em>K is similar to G</em>

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Answer:

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Discounted price = (1 - 50%) * original price

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Sales tax amount = 0.1 * $40 = $4

Total cost = discounted price + sales tax amount

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