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vagabundo [1.1K]
3 years ago
11

If f(2)=4, then f-1(4)= what?

Mathematics
1 answer:
aalyn [17]3 years ago
3 0

Answer:

12

Step-by-step explanation:

f = 2

2(2) =4

2-1(4) = 12

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Please please help <br><br> Given the function f(x)=1/3x*2-3x+5 determine the inverse relation
yuradex [85]

The inverse relation of the function f(x)=1/3x*2-3x+5 is f-1(x) = 9/2 + √(3x + 21/4)

<h3>How to determine the inverse relation?</h3>

The function is given as

f(x)=1/3x^2-3x+5

Start by rewriting the function in vertex form

f(x) = 1/3(x - 9/2)^2 -7/4

Rewrite the function as

y = 1/3(x - 9/2)^2 -7/4

Swap x and y

x = 1/3(y - 9/2)^2 -7/4

Add 7/4 to both sides

x + 7/4= 1/3(y - 9/2)^2

Multiply by 3

3x + 21/4= (y - 9/2)^2

Take the square roots

y - 9/2 = √(3x + 21/4)

This gives

y = 9/2 + √(3x + 21/4)

Hence, the inverse relation of the function f(x)=1/3x*2-3x+5 is f-1(x) = 9/2 + √(3x + 21/4)

Read more about inverse functions at:

brainly.com/question/14391067

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1 year ago
If an object has 1.75g/mL will it sink or float in water which has a density of 1.0g/mL
Alina [70]

Answer:

it will sink cause it has more density

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EF is the median of trapezoid ABCD.
BARSIC [14]

Answer:

Part A) x = 11

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length of AD =  3x - 18 =  3(11) - 4 = 33 - 4 =29

Step-by-step explanation:

Median of trapezium is m=\frac{base1+base2}{2}

In provided figure, base1 is x+12 and base2 is 3x-4

A) solve for value of x

calculate the median m=\frac{base1+base2}{2}

4x-18=\frac{x+12+3x-4}{2}

4x-18=\frac{4x+8}{2}

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2x = 18 + 4

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B) To find the length of BC, AD and EF , put the value of x in equation of lines

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A 2-yard piece of string costs $5.04. What is the price per foot?
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