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Lady_Fox [76]
3 years ago
15

The sum of the first 8 terms of a geometric sequence with 4 as the first term and a common ratio of 3 is ​

Mathematics
2 answers:
ki77a [65]3 years ago
7 0

9514 1404 393

Answer:

  13120

Step-by-step explanation:

The sum of terms of a geometric series is ...

  Sn = a1·(r^n -1)/(r -1)

You have n=8, a1=4, r=3, so the sum is ...

  S8 = 4·(3^8 -1)/(3 -1) = 2(3^8 -1) = 13,120

olya-2409 [2.1K]3 years ago
6 0

Answer:

<h2><u>1</u><u>3</u><u> </u><u>1</u><u>2</u><u>0</u></h2>

Step-by-step explanation:

hope it helps u too

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4 years ago
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Given the following diagram, find the missing measure.<br> m&lt;1=30, m&lt;2=45, m&lt;3=
Mice21 [21]
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3 years ago
5x 2 +5x x 2 −1 ​ What is an equivalent expression in lowest terms?
arsen [322]

Answer:

Step-by-step explanation:

Explanation:

Start by writing out your starting expression

x

2

−

5

x

2

+

5

x

−

14

−

x

+

3

x

+

7

Next, factor the denominator of the first fraction

x

2

+

5

x

−

14

x

2

+

7

x

−

2

x

−

14

x

(

x

−

2

)

+

7

(

x

−

2

)

(

x

−

2

)

(

x

+

7

)

Your expression is thus equivalent to

x

2

−

5

(

x

−

2

)

⋅

(

x

+

7

)

−

x

+

3

x

+

7

Since you have to subtract two fractions, you need to find the commonon denominator first. To do that, multiply the second fraction by  

x

−

2

x

−

2

x

2

−

5

(

x

−

2

)

⋅

(

x

+

7

)

−

(

x

+

3

)

⋅

(

x

−

2

)

(

x

−

2

)

⋅

(

x

+

7

)

This will get you

x

2

−

5

−

(

x

+

3

)

(

x

−

2

)

(

x

−

2

)

(

x

+

7

)

x

2

−

5

−

x

2

−

x

+

6

(

x

−

2

)

(

x

+

7

)

=

1

−

x

(

x

−

2

)

(

x

+

7

)

5 0
3 years ago
19. What is the equation of the line in slope-intercept form that passes through the point (24,9) and 1/8
Y_Kistochka [10]

Answer:

y=1/8x+6

Step-by-step explanation:

y-y1=m(x-x1)

y-9=1/8(x-24)

y=1/8x-24/8+9

y=1/8x-3+9

y=1/8x+6

6 0
3 years ago
1<br> 3<br> 4<br> 0.5<br> - 3<br> - 6.5<br> - 10<br> What is the linear function?
Wewaii [24]

Answer: it’s probably negative 6.5 but there has to be a grid to be more clear

Step-by-step explanation:

7 0
3 years ago
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