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alukav5142 [94]
2 years ago
8

If f(x) = 4x-3, which of the following is the inverse of f(x)?

Mathematics
1 answer:
GalinKa [24]2 years ago
5 0

Answer:

\huge\boxed{f^{-1}(x)=\dfrac{x+3}{4}=\dfrac{1}{4}x+\dfrac{3}{4}}

Step-by-step explanation:

f(x)=4x-3\to y=4x-3\\\\\text{exchange}\ x\ \text{to}\ y\ \text{and vice versa}\\\\x=4y-3\\\\\text{solve for}\ y\\\\4y-3=x\qquad|\text{add 3 to both sides}\\\\4y-3+3=x+3\\\\4y=x+3\qquad|\text{divide both sides by 4}\\\\\dfrac{4y}{4}=\dfrac{x+3}{4}\\\\y=\dfrac{x+3}{4}\to y=\dfrac{1}{4}x+\dfrac{3}{4}

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Solve the following using the elimination or substitution method. Show all work.
ki77a [65]

Jim has 28 nickels and 37 dimes in his pocket. which is determined by the substitution method.

<h3>What is the equation?</h3>

The term "equation" refers to mathematical statements that have at least two terms with variables or integers that are equal.

Let the number of nickels would be n

Let the number of dimes would be d

As per the given question,

d + n = 65  ....(i)

0.10d + 0.05n = 5.10  ....(ii)

From equation (i),

d + n = 65

d + n - n = 65 - n

d = 65 - n

Substitute in for the equation(ii): d = 65 - n

0.10(65 - n) + 0.05n = 5.10

6.5 - 0.10n + 0.05n = 5.10

6.5 - 0.05n = 5.10

6.5 - 0.05n - 6.5 = 5.10 - 6.5

- 0.05n = -1.4

n = 28

This means there are 28 nickels

Substitute the value of n = 28 in the equation (i),

d + n = 65

d + 28 = 65

d = 37

So there are 37 dimes

Thus, Jim has 28 nickels and 37 dimes in his pocket.

Learn more about the equation here:

brainly.com/question/10413253

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3 0
1 year ago
Read 2 more answers
Determine the vector equation of movement of a plane that is moving in a straight line passing through the point (10, 5, 6) and
Anton [14]

Answer:

D. r(t) = (10 + 12t, 5 + −34t, 6 + −6t)

Step-by-step explanation:

Hope this helps

7 0
3 years ago
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a rabbit's fur grows at a rate of 5/2 per month. How many months will it take for the rabbit's fur to grow 15/4 inches
UkoKoshka [18]
The answer is 1.5 months

explanation:

5/2 = 2.5

15/4 = 3.75


2.5 per month

3.75 per x months


x = (3.75×1)/2.5

x = 3.75/2.5

x = 3/2 = 1.5 months
3 0
3 years ago
In ΔQRS, the measure of ∠S=90°, RQ = 13, SR = 12, and QS = 5. What ratio represents the tangent of ∠Q?
Olenka [21]

Answer:

2.4

Step-by-step explanation:

RSQ is a right anle triangle

tan(Q) = opposite/adjacent

tan(Ql = SR/QS

tan(Q = 12/5 = 2.4

3 0
3 years ago
The lines on a 2-cup liquid measuring cup divide each cup into eighths If you measure 1 3/4 cups of water between which two quan
sasho [114]

Answer:

The line between 1 5/8 and 1 7/8 is exactly 1 3/4.

Step-by-step explanation:

1 3/4 = 1 6/8

Since the lines are every 1/8 of a cup, there are a total of 16 lines indicating 1/8 of a cup for a total of two full cups.

1/8 less than 1 6/8 is 1 5/8.

1/8 more than 1 6/8 is 1 7/8.

The line between 1 5/8 and 1 7/8 is exactly 1 3/4.

5 0
2 years ago
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