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2 answers:
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Answer:
a) the domain is the set of all real numbers
Step-by-step explanation:
Given:
An exponential function and its graph.
A line parallel to axis is drawn at
which is a dashed line.
Dashed line means, the function does not attain a value equal to .
Domain of a function, is the set of values which can be possible for the variable
that can be given as input.
Range of a function, is the set of possible values of
i.e. the output of the function.
As seen from the graph, the domain of the exponential function does not have any constraint on it.
Therefore, any real number can be given as input.
So, <em>a) The domain is the set of all real numbers.</em>
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Let us discuss about the range of function.
As stated above as well, the range of the function can not contain the value .
And there is no value possible below it.
So, the <em>range is all real numbers greater than -9.</em>
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<em>The answer is:</em>
"a) the domain is the set of all real numbers" is true.
The height of flagpole is 12.5 feet.
Step-by-step explanation:
Given,
Height of woman = 5 foot
Shadow of woman = 6 feet
Ratio of height to shadow = 5:6
Shadow of flagpole = 15 foot
Height of flagpole = x
Ratio of height to shadow = x:15
Using proportion;
Ratio of height to shadow :: Ratio of height to shadow
Product of mean = Product of extreme
Dividing both sides by 6
The height of flagpole is 12.5 feet.
Keywords: ratio, proportion
Learn more about proportion at:
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