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Mnenie [13.5K]
3 years ago
10

Make y the subject of the formulaX= 4-3y/y-5​

Mathematics
1 answer:
BigorU [14]3 years ago
8 0

Step-by-step explanation:

X= 4-3y/y-5

x(y-5) = 4-3y

xy -5x = 4 -3y

xy+3y = 4+5x

y(x+3)= 4+5x

y = (4+5x)/(x+3)

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y=1/2x-5

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simplify

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2 years ago
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Sever21 [200]

Answer:

S_9=-18.703.

Step-by-step explanation:

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\sum_{i=1}^9(-\frac{1}{2})^{i-1}

When we substitute i=1, we get the first term, which is a_1=-28(-\frac{1}{2})^{1-1}


This implies that,

a_1=-28(-\frac{1}{2})^{0}


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The common ratio is

r=-\frac{1}{2}


The finite geometric sum is given by the formula,

S_n=\frac{a_1(r^n-1)}{r-1} , -1\:.


Since there are 9 terms, we find the sum of the first nine terms by putting n=9 in to the formula to get,


S_9=\frac{-28((-\frac{1}{2})^9-1)}{-\frac{1}{2}-1}.


S_9=\frac{-28((-\frac{1}{2})^9-1)}{-\frac{1}{2}-1}.


S_9=\frac{-28((-\frac{1}{512})-1)}{-\frac{3}{2}}.


S_9=\frac{-28(-\frac{513}{512})}{-\frac{3}{2}}.


S_9=-28(\frac{171}{256}).


S_9=-\frac{1197}{64}.



S_9=-18.703.


The correct answer is B





4 0
3 years ago
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vodomira [7]

Answer:

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Step-by-step explanation:

Use the slope-intercept form to find the slope and y-intercept.

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Solve the inequality. Graph the solution.

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