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3 years ago

1-(2x+1)/(x+4) = (3)/(x^2-3x-28)

Mathematics

1 answer:

Nat2105 [25]3 years ago

3 0

Answer:

dang

Step-by-step explanation:

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Which of the following functions represent exponential decay?

Zina [86]

Option C: $f(x)=3^{5}\left(\frac{1}{3}\right)^{x}$ is the function that represent exponential decay.

Explanation:

The exponential decay can be represented by

$f(x)=a \cdot b^{x}$ where $a>0$ and $0$

Option A: $f(x)=3(1.7)^{x-2}$

From the function, we can see that $a=3$ and $b=1.7$

Thus, $a>0$ and $b>1$

Thus, the function $f(x)=3(1.7)^{x-2}$ does not represent exponential decay.

Hence, Option A is not the correct answer.

Option B: $f(x)=3(1.7)^{-2 x}$

From the function, we can see that $a=3$ and $b=1.7$

Thus, $a>0$ and $b>1$

Thus, the function $f(x)=3(1.7)^{-2 x}$ does not represent exponential decay.

Hence, Option B is not the correct answer.

Option C: $f(x)=3^{5}\left(\frac{1}{3}\right)^{x}$

From the function, we can see that $a=3^5=243$ and $b=\frac{1}{3} =0.3333$

Thus, $a>0$ and $0$

Thus, the function $f(x)=3^{5}\left(\frac{1}{3}\right)^{x}$ represent exponential decay.

Hence, Option C is the correct answer.

Option D: $f(x)=3^{5}(2)^{-x}$

From the function, we can see that $a=3^5=243$ and $b=2$

Thus, $a>0$ and $b>1$

Thus, the function $f(x)=3^{5}(2)^{-x}$ does not represent exponential decay.

Hence, Option D is not the correct answer.

8 0

4 years ago

The length of a rectangular sign is 10ft less than twice its width. Its perimeter is 118 ft. Find the length of and width of the

madam [21]

Length of one side = 36ft
Width of one side = 23ft

Length of 2 sides = 72ft
Width of 2 sides = 46ft

72+46 = 118

4 0

3 years ago

a model car is one tenth of the size of the real car the models measures 42cm longs what the length of length of the real car

trapecia [35]

Just multiply 42 by 10 and that gives you 420 , so the real car has a length of 420cm or 4.2 metres :)

8 0

3 years ago

Read 2 more answers

Triangle JKL has vertices J(0,2), K(−1,2), and L(0,−3). What are the coordinates of the image of point K after a dilation with a

Yakvenalex [24]

Answer:

K(-4 , 8)

Step-by-step explanation:

Baby girl, you so hot guys line up for you.

4 0

2 years ago

Is 0.05=1/2 correct?

BlackZzzverrR [31]

Answer:

Step-by-step explanation:

To convert a decimal to a fraction you multiply by one hundred. Then, you write that number as a fraction over 100 and simplify. Eg 0.5×200 = 50 , 50/100 simplifies to 1/2. Therefore 0.05 as a fraction is 0.05×100 = 5, 5/100 simplified = 1/20

4 0

3 years ago