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adell [148]
3 years ago
12

What is the functions domain ?

Mathematics
1 answer:
Jobisdone [24]3 years ago
6 0
f(x)=x+5;\ y\in\{7;\ 9\}\\\\x+5=7\ \ \ |-5\\x=2\\\\x+5=9\ \ \ |-5\\x=4\\\\\text{The domain is:}\ \{2;\ 4\}
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To find the answer, we multiply these two fractions
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7 0
3 years ago
Why do you subtract exponents when dividing powers with the same base?
enyata [817]

Because the factors in the numerator cancel with the factors in the denominator. Consider this example:

\dfrac{6^7}{6^4} = \dfrac{6\times6\times6\times6\times6\times6\times6}{6\times6\times6\times6} = 6\times6\times6 = 6^3 = 6^{7-4}

All of the 6's in the denominator canceled with the 6's in the numerator, and only 3 6's "survived". The opposite can also happen, if there are more terms in the denominator:

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5 0
2 years ago
The function C(x)=20x+4,000 represents the cost to produce x number of items. How many items should be produced so that the aver
NeX [460]

Answer:

More than 200 items must be produced to keep the average cost below $40 per item.

Step-by-step explanation:

5 0
3 years ago
What is the standard deviation of this data?
earnstyle [38]
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6 0
3 years ago
Brainliest if you are correct
frez [133]

Answer:

D) log_2(x)+3log_2(9)

Step-by-step explanation:

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4 0
2 years ago
Read 2 more answers
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