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denis23 [38]
2 years ago
7

If f(x) = 5x, what is f -1 (x) ?

Mathematics
1 answer:
Gala2k [10]2 years ago
4 0

Answer:

f^{-1}(x) = \frac{x}{5}

Step-by-step explanation:

f^{-1}\left( x\right)  =y\Longleftrightarrow f\left( y\right)  =x

…………………………

f(y) = x

⇔ 5y = x

\Longleftrightarrow  y =\frac{x}{5}

\Longleftrightarrow  f^{-1}(x) = \frac{x}{5}

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PLEASE HELP! THANKS! The measures, in degrees, of the 3 angles of a triangle are given by 2x +1, 3x - 3, and 9x. What is the mea
drek231 [11]
So all of the internal angles of a triangle will add up to 180 degrees.  So if we add all of the expressions given and set them equal to 180, we can solve for x, then solve for each angle...

(2x + 1) + (3x - 3) + 9x = 180
2x + 3x + 9x + 1 - 3 = 180
14x - 2 = 180
14x = 182
x = 13

Now we can substitute 13 into each expression to find the value of each angle...

2x + 1 =
2(13) + 1 =
26 + 1 = 27 degrees

3x - 3 =
3(13) - 3 =
39 - 3 = 36 degrees

9x =
9(13) = 117 degrees

So the 3 angles are 27 degrees, 36 degrees, and 117 degrees.

The smallest is 27 degrees

** Note-- I don't see 27 degrees in the answer choices you gave, so I double checked my math (I didn't find any mistakes).  Please check to see that the question is written correctly (pay close attention to plus and minus signs).
7 0
3 years ago
What is the distance between the points (0,1) and (8,7)?
andrew11 [14]

Answer:

The answer is 10.

Step-by-step explanation:

4 0
3 years ago
Can sum1 do this for me
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5 0
3 years ago
According to the Rational Root Theorem, what are all the potential rational roots of f(x) = 5x - 7x + 11?
Maksim231197 [3]

Answer:

±1, ±11, ±1/5, ±11/5

Step-by-step explanation:

f(x) = 5x³ - 7x + 11

constant term: 11

leading coefficient: 5

factors of the constant term: ±1, ±11

factors of the leading coefficient: ±1, ±5

possible rational roots = factors of the constant term/factors of the leading coefficient = ±1, ±11, ±1/5, ±11/5

6 0
3 years ago
If 5% of the total ticket is $125 what is the value of the total ticket sales
andriy [413]
If you would like to know what is the value of the total ticket sales, you can calculate this using the following steps:

$x ... the value of the total ticket sales

5% of $x is $125
5/100 * x = 125     /*100/5
x = 125 * 100 / 5
x = $2500

Result: The value of the total ticket sales is $2500.
6 0
3 years ago
Read 2 more answers
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