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LUCKY_DIMON [66]
3 years ago
14

Find the sum is of the geometric series 12+6+3+...

Mathematics
1 answer:
olga55 [171]3 years ago
3 0
S=12+6+3+...\\\\a_1=12;\ a_2=6;\ a_3=3\\\\r=a_2:a_1\\\\r=6:12=\dfrac{1}{2} \ \textless \  1\\\\therefore\ S=\dfrac{a_1}{1-r}\\\\S=12+6+3+...=\dfrac{12}{1-\frac{1}{2}}=\dfrac{12}{\frac{1}{2}}=12\cdot\dfrac{2}{1}=24\\\\Answer:\boxed{12+6+3+...=24}
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How do you solve ? <br>2(x−(3+2x)+9)=3x−8
PIT_PIT [208]

Hey there!!

Given equation :

... 2 ( x - ( 3 + 2x ) + 9 ) = 3x - 8

Using the distributive property.

... 2 ( x - 3 - 2x + 9 ) = 3x - 8

... 2 ( -x + 6 ) = 3x - 8

Using the distributive property.

... -2x + 12 = 3x - 8

Subtracting 12 on both sides.

... -2x = 3x - 8 - 12

... -2x = 3x - 20

Subtracting 3x on both sides.

... -2x - 3x = -20

... -5x = -20

Dividing by -5 on both sides.

... x = -20 / -5

... x = 4

<em>Hence, the answer is 4. </em>

Hope my answer helps!

6 0
3 years ago
A leaking faucet drips into a bucket. The faucet drips at a constant rate. The level of water in the bucket rises
Sveta_85 [38]

Answer:

The per hour rate is 0.5 inches per hour

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Mathematically, we can get this by dividing the amount of increment by the time it took

That would be 3 inches divided by 6 hours

= 3/6 = 0.5 inches per hour

7 0
3 years ago
What is the area of this shape
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Answer:

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Step-by-step explanation:

6 0
3 years ago
The average of the total sales amount for each associate last year was 125,000. Based on this average, what is the difference be
Marianna [84]

Answer:

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Step-by-step explanation:

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5 0
2 years ago
Will give Brain!! To this
Mamont248 [21]

Answer: 13.2

Step-by-step explanation:

the ratio between the given measurements (11 and 5) is 2.2 [5 x 2.2 = 11]

so, i just multiplied 6 by 2.2 , which equals 13.2 .

hope this helps! xoxo

7 0
3 years ago
Read 2 more answers
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