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Tamiku [17]
3 years ago
8

F(x) = 4x − 12 f−1(x) =___? x +____?

Mathematics
1 answer:
natali 33 [55]3 years ago
6 0

Answer:

f^{-1}(x)=\frac{1}{4}x+3

Step-by-step explanation:

We have been given the function f(x)=4x-12

Below are steps for finding the inverse of the function.

Step 1:

Replace f(x) with y

y=4x-12

Step 2:

Interchange x and y

x=4y-12

Step 3:

Solve for y

x+12=4y\\\\y=\frac{1}{4}x+3

Step 4:

Replace y with f^{-1}(x)

f^{-1}(x)=\frac{1}{4}x+3

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One number is 3 less than another number if their sum is 49
Musya8 [376]
One number is 26 the other is 23


x+y=49

Y=x+3,X (now substitute it in the equation)

x+3+x=49

2x+3=49

2x=46. X=23


Y=x+3. Y=23+3 =26 for checking 23+26=49
6 0
2 years ago
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3 0
3 years ago
For f(x) = 3x + 1 and g(x) = x2 - 6, find (f+ g)(x).
kirza4 [7]

Answer:

B

Step-by-step explanation:

(f+g)(x)=f(x)+g(x)

3x+1+x2-6 = x2+3x-5

5 0
3 years ago
The right triangle shown has angles X, Y, and Z and side lengths a, b, and
laiz [17]
So attached is a picture of the triangle you are talking about and listed under are the choices:

A.) Cos Z=b/c 
B.) Sin X=c/b 
C.) Tan X=b/a 
<span>D.) Tan Z=a/b
</span>
The answer would then be B. SinX = c/b.

Just remember SOH CAH TOA:

Sinθ=  Opposite         Cosθ =    Adjacent             Tanθ=   Opposite
         Hypotenuse                   Hypotenuse                        Adjacent

Using the triangle in the scenario, you just need to identify which side is which. 

Given m∠Z
Adjacent = b
Opposite = a
Hypotenuse = c

SinZ=  a         CosZ = b             TanZ= a 
            c                      c                        b

Given m∠X:

Adjacent = b
Opposite = a
Hypotenuse = c

SinX= <u> b </u>        CosX =<span><u> a </u></span>            TanX=<span><u> b </u></span>
            c                      c                        a

So the answer is B. 

Attached is a picture of how I assigned the sides depending on the angle used.

4 0
3 years ago
Without
aivan3 [116]

Answer:

Thousandths place.

Step-by-step explanation:

The answer doesn't change that drastically

6 0
2 years ago
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