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bonufazy [111]
3 years ago
11

If f(x) = one/nine x -2, what is f^-1(x)

Mathematics
1 answer:
astraxan [27]3 years ago
6 0

Answer:

f^{-1} (x)=9x+18

Step-by-step explanation:

Assuming f(x)=\frac{1}{9} x-2

What we have to do is replace f(x) with y, swap the locations of x and y, and then solve for y.

y= \frac{1}{9} x-2\\\\x=\frac{1}{9}y-2\\ \\x+2=\frac{1}{9}y\\\\y=9x+18\\\\f^{-1} (x)=9x+18

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Find the value of the trigonometric ratio. Simplify the ratio if possible.
sweet [91]

Step-by-step explanation:

Given that,

BC = 8

Ac = 15

We can find AB using the pythagoas theorem.

AB=\sqrt{AC^2+BC^2}\\\\=\sqrt{15^2+8^2}\\\\AB=17

We know that,

\cos\theta=\dfrac{B}{H}, B is base and H is Hypotenuse

\cosB=\dfrac{8}{17}

Hence, this is the required solution.

3 0
3 years ago
The distance between the point (-3,4) and the point of origin
pickupchik [31]

Answer:

5

Step-by-step explanation:

1) origin point is (0;0);

2) the required distance is:

d=\sqrt{(-3-0)^2+(4-0)^2} =5.

7 0
3 years ago
A train travels at 100 milers per hour. An equation can be written that compares the time (t) with the distance (d). Define the
Alenkasestr [34]

Answer:

The domain is t ≥ 0

The range is D ≥ 0

Step-by-step explanation:

rate = \frac{distance}{time}

D(t) = 100t + d₀

t is the time measured in hours.

d₀ is the initial position of the train.

We can assume the distance they go is not negative so...

The domain is t ≥ 0

The range is D ≥ 0

8 0
2 years ago
I NEED HELP FAST!! PLZ. ​
adoni [48]
The answer is z = 4 because of you put 4 into the equation it equals to 100
3 0
3 years ago
Completing the square:
vichka [17]

Answer:

Step-by-step explanation:

Key to this method is remembering that

(a+b)^2 = a^2 + 2ab + b^2

So, if you divide the coefficient of x by 2 and square it, that will complete the square. With that in mind, things are easy.

6/2 = 3, so add 3^2 = 9

x^2+6x+9 = (x+3)^2

So, c=9

Similarly, for the other two,

c = (\frac{-34}{2} )^2 = (-17)^2 = 289

You don't really have to worry about the sign, since squaring will always make it positive

(\frac{25}{13}) ^2 = \frac{625}{169}

7 0
3 years ago
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