X(x+2) = 48
x^2 + 2x = 48
x^2 + 2x - 48 = 0
*Use quadratic formulae*
x = 6
Numbers are 6 and 8
The sum of any geometric sequence (if it converges, r^2<1) is of the form:
s(n)=a(1-r^n)/(1-r), a=initial term, r=common ratio, n=number of terms...
s(n)=30(1-0.4^n)/(0.6)
s(n)=50(1-0.4^n)
Since r<1 the sum of the infinite series is just:
s=50
Answer:
i might be wrong but 4.913
Step-by-step explanation:
i got this by using the calculator 1.7^3 = 4.913
Https://www.khanacademy.org/math/algebra/algebra-functions/evaluating-functions/v/what-is-a-function
This video will help you more than words.
I hope this helped!
Answer:
Neither, x can be a negative number as well. If there is context, please post more to the question.
Step-by-step explanation:
