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Amiraneli [1.4K]
3 years ago
6

Given f(x) = 3x + 4. Find F-1(7) Please help I’ll give you brainiest answer 100points!!!!!

Mathematics
1 answer:
Musya8 [376]3 years ago
6 0

Answer:

f⁻¹(7) = 1

Step-by-step explanation:

Step 1: Write out function

f(x) = 3x + 4

Step 2: Find f⁻¹(x) (or known as inverse f(x))

y = 3x + 4

x = 3y + 4

-3y + x = 4

-3y = 4 - x

y = -4/3 + x/3

Step 3: Plug in 7 into inverse f(x)

f⁻¹(7) = 7/3 - 4/3

f⁻¹(7) = 3/3

f⁻¹(7) = 1

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Sketch the points (0,5,2),(4,0,-1),(2,4,6) and(1,-1,2) o a single set of coordinate axes?
nordsb [41]

Explanation:

As points have three coordinates i.e. x, y and z hence the sketch of the given four points is drawn in 3D shape and for that picture is attached here with this answer.

Points are given in the format as below

(value of x-coordinate , value of y-coordinate , value of z-coordinate)

In the attachment:

Point A = (0,5,2) (in blue color)

Point B = (4,0,-1) (in purple color)

Point C = (2,4,6) (in orange color)

Point D = (1,-1,2) (in black color)

7 0
3 years ago
Identify the solution set of 3 In 4 = 2 In x.<br> -{6}<br> -{-8,8}<br> -(8)
o-na [289]

Option C: The solution set is \{8\}

Explanation:

The expression is 3 \ln 4=2 \ln x

Now, let us find the solution set.

Switch sides, we get,

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Dividing by 2 on both sides, we have,

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Thus,  \ln 4=\ln 2^2=2\ln 2

Hence, the above expression becomes,

\ln x=\frac{3 \cdot 2 \ln (2)}{2}

Simplifying, we get,

\ln x=3 \ln 2

Applying the log rule, we get,

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Simplifying, we have,

$$\ln x$=\ln \left8\right$

Applying the log rule, we have,

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Thus, the solution set is \{8\}

Hence, Option C is the correct answer.

5 0
3 years ago
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MA_775_DIABLO [31]

Answer:

B


Step-by-step explanation:

<em>Let's multiply this out and combine like terms:</em>

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So there are 2 terms.

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vesna_86 [32]

Answer:

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Step-by-step explanation:

all you do is combine the like terms. and the omly like terms are -10ab and -9ab. 2ab^2 is not one of the like terms simply because of that ^2.

3 0
3 years ago
Find the value of x.
dmitriy555 [2]

Answer:

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