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Elden [556K]
3 years ago
12

W(x)=4x+5, find w(-8)

Mathematics
2 answers:
ollegr [7]3 years ago
5 0
If I remember properly, the number in the parentheses will be substitute the x on the other side of the equation sign. So w(-8)=4(-8)+5, or -40+5 which is equal to -35
Genrish500 [490]3 years ago
3 0
Just Put -8 in for X 4(-8)+5   goes to -32+5 to       27
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Step-by-step explanation:

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Determine the vertical asymptote for the rational function f(x) = x - 4 over 2x - 3
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Answer:

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Step-by-step explanation:

Given

f(x) = \frac{x-4}{2x-3}

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Equating the denominator to zero and solving gives the value that x cannot be and if the numerator is non zero for this value then it is a vertical asymptote.

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Alex787 [66]

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3 years ago
Evaluate 5a+3 4b when a = b - 4and b = -2.​
Svetlanka [38]
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3 years ago
What is the ratio of x to y?
abruzzese [7]
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\frac{2x+y}{2} = \frac{2x}{3} = k

so we have:

2x=3k
2x+y=2k therefore:
3k+y=2k
y= - k

x=\frac{3}{2} k

\frac{x}{y} = - \frac{3}{2}

The corect answer is A. -3/2

or:

\frac{3}{2} = \frac{2x}{2x+y}

From any proportion, we get another proportion by inverting the extremes and the means:

\frac{2x+y}{2x} = \frac{2}{3}

We use a property of proportions:

\frac{a}{b} = \frac{c}{d}  where a, d are extremes and b,c are means and the product of the extremes equals the product of the means (a*d=b*c),

so we have

\frac{a-b}{b} = \frac{c-d}{d}  or

\frac{a+b}{b} = \frac{c+d}{d}  (you can check this also by "the product of the extremes equals the product of the means")

\frac{2x+y}{2x} = \frac{2}{3}

\frac{(2x+y)-2x}{2x} = \frac{2-3}{3}

\frac{y}{2x} = \frac{-1}{3}

3y = - 2x

\frac{x}{y} = -\frac{3}{2}



4 0
3 years ago
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