2 years ago

Given the ordered pair (2,-8), assuming x and y vary directly, what is the constant of variation?

Mathematics

2 answers:

mixas84 [53]2 years ago

7 0

Answer:

yes

Step-by-step explanation:

yoooooooooooooooooooo

raketka [301]2 years ago

4 0

I saw someone already answered thisi just needed to answer 1 question.

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2 years ago

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\\
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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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2 years ago

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denis-greek [22]

-6.4 – 4(-2.8)
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3 years ago

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