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3 years ago

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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exactly 2/5 of the unversity students live off campus. Of those students, 3/10 of them live at home. what fraction of the unives

jekas [21]

To find the answer, we multiply these two fractions
2/5 * 3/10
6/50
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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:

$\dfrac{2^2}{2^4} = \dfrac{2\times 2}{2\times 2\times 2 \times 2} = \dfrac{1}{2^2} = 2^{-2} = 2^{2-4}$

So, everything is coherent

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:

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3 years ago

What is the standard deviation of this data?

earnstyle [38]

The answer is 23.2 I just entered the data into an online standard deviation calculator.

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3 years ago

Brainliest if you are correct

frez [133]

Answer:

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

Step-by-step explanation:

Given: $log_2(9x^{3})$

Use Exponent Rule: $3log_2(9x)$

Use Addition Rule: $log_2(x)+3log_2(9)$

4 0

2 years ago

Read 2 more answers