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zhannawk [14.2K]
3 years ago
7

M < TYV=64° What is m A.116° B.90° C.26° D.64°

Mathematics
1 answer:
solmaris [256]3 years ago
4 0
My answer to this question C
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Which pair of funtions is not a pair of inverse functions? please help!!
antiseptic1488 [7]

Answer:

f(x)=\frac{x}{x+20} , g(x)=\frac{20x}{x-1}

Step-by-step explanation:

we know that

To find the inverse of a function, exchange variables x for y and y for x. Then clear the y-variable to get the inverse function.

we will proceed to verify each case to determine the solution of the problem

<u>case A)</u> f(x)=\frac{x+1}{6} , g(x)=6x-1

Find the inverse of f(x)

Let

y=f(x)

Exchange variables x for y and y for x

x=\frac{y+1}{6}

Isolate the variable y

6x=y+1

y=6x-1

Let

f^{-1}(x)=y

f^{-1}(x)=6x-1

therefore

f(x) and g(x) are inverse functions

<u>case B)</u> f(x)=\frac{x-4}{19} , g(x)=19x+4

Find the inverse of f(x)

Let

y=f(x)

Exchange variables x for y and y for x

x=\frac{y-4}{19}

Isolate the variable y

19x=y-4

y=19x+4

Let

f^{-1}(x)=y

f^{-1}(x)=19x+4

therefore

f(x) and g(x) are inverse functions

<u>case C)</u> f(x)=x^{5}, g(x)=\sqrt[5]{x}

Find the inverse of f(x)

Let

y=f(x)

Exchange variables x for y and y for x

x=y^{5}

Isolate the variable y

fifth root both members

y=\sqrt[5]{x}

Let

f^{-1}(x)=y

f^{-1}(x)=\sqrt[5]{x}

therefore

f(x) and g(x) are inverse functions

<u>case D)</u> f(x)=\frac{x}{x+20} , g(x)=\frac{20x}{x-1}

Find the inverse of f(x)

Let

y=f(x)

Exchange variables x for y and y for x

x=\frac{y}{y+20}

Isolate the variable y

x(y+20)=y

xy+20x=y

y-xy=20x

y(1-x)=20x

y=20x/(1-x)

Let

f^{-1}(x)=y

f^{-1}(x)=20x/(1-x)

\frac{20x}{1-x}\neq \frac{20x}{x-1}

therefore

f(x) and g(x) is not a pair of inverse functions

7 0
3 years ago
Read 2 more answers
A car is traveling at -40 miles per hour. What will their position be after 3 hours?
marissa [1.9K]

Answer:

-120 miles

Step-by-step explanation:

A car is traveling at -40 miles per hour. What will their position be after 3 hours?

-40 mph times 3 hours is -120 miles

4 0
2 years ago
Twice a number decreased by four is seven
GalinKa [24]

Answer:

2x > 10+4

x > 14/2

x > 7

Step-by-step explanation:

4 0
3 years ago
A 12.3-ounce package costs $2.99. What is the unit price?
IRINA_888 [86]

Answer:

$0.243089430894309 Per ounce

Price divided by ounces gives you the unit price. Since this is an unreal number when talking about price it will be $0.24 per ounce.


3 0
3 years ago
X-1/x^2 - x - 20 Give the equivalent numerator if the denominator is (X - 5)(x + 4)(x + 3)
Fynjy0 [20]

Answer:

x^2+2x-3

Step-by-step explanation:

Note that x^2-x-20=(x-5)(x+4), so, if the denominator is (x-5)(x+4)(x+3), we need to multiply the numerator by (x+3). And (x-1)(x+3)=x^2+2x-3.

3 0
2 years ago
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