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MAVERICK [17]
3 years ago
12

Find the value of x. A) x = 60 B) x = 59 C) x = 121 D) x = 177

Mathematics
1 answer:
STALIN [3.7K]3 years ago
7 0
Since a triangle always equals 180 degrees, set all these variables equal to 180.
Lets try.
X+3+x+x= 180
Combine like terms
3x+3= 180
Subtract each side by 3
3x=177
Divide each side by 3
X= 59
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Can someone help me with this. Will Mark brainliest.
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Answer:

the distance between the two points is √130.

Step-by-step explanation:

a^2 + b^2 = c^2

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Using Descarte's Rule of Signs, which are possible combinations of zeros for f(x)=2x4−8x3+12x2−16x+10?
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2 years ago
Please just (c)fog-¹​
omeli [17]

<em>f(x)</em> = 1/(1 - <em>x</em>)

<em>g(x)</em> = (<em>x</em> - 1)/<em>x</em>

The inverse functions <em>f</em> ⁻¹<em>(x)</em> and <em>g </em>⁻¹<em>(x)</em>, if they exist, are such that

<em>f( f</em> ⁻¹<em>(x) )</em> = <em>x</em>

<em>g( g</em> ⁻¹<em>(x) )</em> = <em>x</em>

So we have

<em>f( f</em> ⁻¹<em>(x) )</em> = 1/(1 - <em>f</em> ⁻¹<em>(x) </em>) = <em>x</em>

Solve for <em>f</em> ⁻¹<em>(x)</em> :

1 = (1 - <em>f</em> ⁻¹<em>(x)</em> ) <em>x</em>

1 - <em>f</em> ⁻¹<em>(x)</em> = 1/<em>x</em>

<em>f</em> ⁻¹<em>(x)</em> = 1 - 1/<em>x</em>

<em>f</em> ⁻¹<em>(x)</em> = (<em>x</em> - 1)/<em>x</em>

and so <em>f</em> ⁻¹<em>(x)</em> = <em>g(x)</em>.

Similarly, you can solve for <em>g</em> ⁻¹<em>(x)</em> <em>:</em>

<em>g(</em> <em>g</em> ⁻¹<em>(x) )</em> = (<em>g</em> ⁻¹<em>(x)</em> - 1) / <em>g</em> ⁻¹<em>(x)</em> = <em>x</em>

1 - 1/<em>g</em> ⁻¹<em>(x)</em> = <em>x</em>

1/<em>g</em> ⁻¹<em>(x)</em> = 1 - <em>x</em>

<em>g</em> ⁻¹<em>(x)</em> = 1/(1 - <em>x</em>)

So we know <em>f(x)</em> and <em>g(x)</em> are inverses of one another,

<em>f</em> ⁻¹<em>(x)</em> = <em>g(x)</em>

<em>g</em> ⁻¹<em>(x)</em> = <em>f(x)</em>

Then

(a) (<em>f</em> o <em>g</em>)(<em>x</em>) = <em>x</em>

(b) (<em>g</em> o <em>f</em> ⁻¹)(<em>x</em>) = <em>g(g(x))</em> = (<em>g(x)</em> - 1)/<em>g(x)</em> = 1 - 1/<em>g(x)</em> = 1 - <em>x</em>/(<em>x</em> - 1) = 1/(1 - <em>x</em>)

(c) (<em>f</em> o<em> g</em> ⁻¹)(<em>x</em>) = <em>f(f(x))</em> = 1/(1 - <em>f(x) </em>) = 1/(1 - 1/(1 - <em>x</em>)) = 1/(<em>x</em>/(<em>x</em> - 1)) = (<em>x</em> - 1)/<em>x</em>

8 0
3 years ago
Math PT Question 19 Which of the following is the correct equation for the trend line in the scatter plot ?
ki77a [65]

Using the points where the blue line crosses the X and Y axis:

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Equation = y = 5x+5

8 0
3 years ago
Read 2 more answers
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