2 years ago

HELP ANOTHER QUESTION HAVE RSM TOMORROW! PLSSSSS HELP!!!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

Vitek1552 [10]2 years ago

7 0

To Find:

The vale of x

Solution:

In the attachment

Hope this helps :)

allochka39001 [22]2 years ago

3 0

Answer:

Step-by-step explanation:

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find the sum of a 9-term geometric sequence when the first term is 4 and the last term is 1,024 and select the correct answer be

olasank [31]

Hello,

$u_{1} =4\\
 u_{2} =4*q\\
 u_{3} =4*q^2\\
...\\

 u_{9} =4*q^8\\\\
==\textgreater\ 4*q^8=1024\\
==\textgreater\ q^8=256\\
==\textgreater\ q=2\mbox{( and there is a problem in the question) } \ or \ q=-2\\
if\ q=2 \ then\ \sum_{i=0}^{8}\ 4*(2)^i= 4*\dfrac{1-2^9}{1-2} =2044\\

if \ q=-2 \ then\ \sum_{i=0}^{8}\ 4*(-2)^i= 4*\dfrac{1-(-2)^9}{1+2} =684\\



$

Answer B (but see the problem)

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3 years ago

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lawyer [7]

Answer:

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Step-by-step explanation:

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3 years ago

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