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chubhunter [2.5K]
3 years ago
8

4% of what days is 56 days

Mathematics
1 answer:
leva [86]3 years ago
6 0
The answer would be 14 because 4x__=56 ? 4 x14 =56
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Which exponential function is represented by the values in the table?
Goryan [66]

Answer:

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Step-by-step explanation:

<u>Exponential Function</u>

The exponential function can be written with the general equation:

f(x)=A\cdot r^x

Where A is the value when x=0 and r>0 is the ratio. If r is greater than 1, the function is increasing, if r is less than 1, the function is decreasing.

The table shows the relation between values of x and values of the function y. Note that as x increases (one by one), y decreases with a ratio of 1/2. Only the last two choices have ratios of r=1/2. We only have to test which one of them has the correct value of y=4 when x=0.

Substituting in the third function:

\displaystyle f(x)=4\cdot\left(\frac{1}{2}\right)^x

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This gives the correct value of f(0)=4.

Substituting in the fourth function:

\displaystyle f(x)=\frac{1}{2}\cdot\left(\frac{1}{2}\right)^x

\displaystyle f(0)=\frac{1}{2}\cdot\left(\frac{1}{2}\right)^0

f(0) = \frac{1}{2}

This choice is wrong

Correct choice:

\boxed{\displaystyle f(x)=4\cdot\left(\frac{1}{2}\right)^x}

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3 years ago
Which of the following is equal to the length of the major axis of an ellipse?
antoniya [11.8K]

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Answer:

the answer is D because it does not have a function

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divide  by 12

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3  =x

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3 years ago
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