Answer:
<h3>1</h3>
Step-by-step explanation:
Sum of nth term of a GP is expressed as;
Sn = a(r^n-1)/r-1
The sum of the first 8 terms of a GP is expressed as;
S8 = a(r^8 - 1)/r-1
The sum of first 4 terms is expressed as;
S4 = a(r^4 - 1)/r-1
If the sum of the first 8 terms of a GP is five times the sum of first 4 terms then
S8 = 5S4
a(r^8 - 1)/r-1 = 5[a(r^4 - 1)/r-1]
r^8 - 1 = 5(r^4 - 1)
r^8 - 1 = 5r^4 - 5
r^8 - 5r^4 = -5+1
r^4(r^4 - 5) = -4
r^4 - 5 = -4
r^4 = -4+5
r^4 = 1
r = 1
Hence the common ratio is 1
Answer:
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Step-by-step explanation:
Total Solar Eclipse
Hope this helped :)
Answer:
they differ when they are in different sign's but Will be same if the division sign change and the forward number will be reciprocal so it will be the same
When you have to estimate a number, it's always best to round them up to simple figures. In this case, 394.6 can be rounded to 400. 9 can be rounded to 10. Therefore, you just divide 400/10, giving you 40