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navik [9.2K]
2 years ago
15

HELP PLEASE:(( I will give brainliest

Mathematics
1 answer:
katen-ka-za [31]2 years ago
5 0

Answer:

15

Step-by-step explanation:

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The common ratio of a geometric series is 3 and the sum of the first 8 terms is 3280.
Pavlova-9 [17]

Answer:

The first term of the geometric series is 1

Step-by-step explanation:

In this question, we are tasked with calculating the first term of a geometric series, given the common ratio, and the sum of the first 8 terms.

Mathematically, the sum of terms in a geometric series can be calculated as;

S = a(r^n-1)/( r-1)

where a is the first term that we are looking for

r is the common ratio which is 3 according to the question

n is the number of terms which is 8

S is the sum of the number of terms which is 3280 according to the question

Plugging these values, we have

3280 = a(3^8 -1)/(3-1)

3280 = a( 6561-1)/2

3280 = a(6560)/2

3280 = 3280a

a = 3280/3280

a = 1

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2 years ago
the average rainfall in Clearview is 38 inches . this year 29.777 inches fell . How much less rain fell this year than falls in
dexar [7]
38 (average) - 29.777 (this year) = 8.223 inches less this year than the average year.
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3 years ago
Arcola bought 8 virtual reality headsets for $400 each and 8 laptops for
MrRa [10]

Answer:

arcola spent 916 dollars

5 0
2 years ago
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Dimas [21]

Answer:

A= 1/2(2x)(x+7)

Step-by-step explanation:

4 0
3 years ago
What would be the answer to 8x^6/ 8x^5 =?
Lubov Fominskaja [6]
In dividing two equation with variables and exponent, First you must align or rearrange the equation and group them base on their variables but don't forget the sign of each variables. Second, proceed in dividing its quantity and then subtract its exponent to the other variables having the same. So by calculating it, the answer would be  X or X^1 
3 0
3 years ago
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