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Ratling [72]
3 years ago
7

Given the arithmetic sequence an=-1+7(n-1), what is the domain for n?​

Mathematics
2 answers:
alexira [117]3 years ago
8 0

Answer:

Step-by-step explanation:

with 1st term = -1. and common difference is 7

in this series we can say that 1st term is -1 , 2nd term is 6 , 3rd term is 13 , and so on

therefore in a series we cannot define a 0th term , so here n will be greater than or equal to 1.

Oduvanchick [21]3 years ago
5 0

Answer:

n E R

Step-by-step explanation:

Since 7n-8 is a linear equation with no restrictions, n's domain is real numbers.

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Lostsunrise [7]
If your asking for the length of the third side, to find it first we have to build an equation.

let's take x as the length of the two sides with the same length. 
so your equation should be, 

x+x+2x-7=44cm 
=4x-7=44cm
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=4x=51cm
 ÷4   ÷4
=x=12.75cm

length of the sides with equal length= 12.75cm
length of the 3rd side= 12.75×2-7=18.5cm

check,
12.75cm+12.75cm+18.5cm=44cm
hope this helps.....

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Alla [95]

Answer:hello :

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