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Elan Coil [88]
3 years ago
7

How to rationalize the denominator of sqrt(a)/sqrt(a)-2

Mathematics
1 answer:
aivan3 [116]3 years ago
3 0

Answer:

√a(√a + 2)          a - 2√a

----------------- = -----------------

    a - 4                a - 4

Step-by-step explanation:

I am assuming that by "sqrt(a)/sqrt(a)-2" you meant:

√a

----------

√a - 2

To rationalize the denom., multiply numerator and denom. of this fraction by the conjugate of √a - 2, which is √a + 2:

√a(√a + 2)

-----------------

    a - 4

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liberstina [14]
A comparison between a function and its inverse would show that the domain and range of the original function swap. The domain of the function becomes the range of the inverse, the range of the function becomes the domain of its inverse. 

Looking at ordered pairs of the function and its inverse would look like this:

(2,4) on the original function becomes (4,2) on the inverse. 

While the graph of a function and its inverse are noticeably different an important thing to note is that it is merely a reflection across the line y=x. 

So even though they appear different you are looking at the same relationship just as y vs. x instead of x vs. y
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3 years ago
At what point does the line given by the following equation cross the y-axis? y = (6/9)X + 9
Elodia [21]

Answer:

D

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = \frac{6}{9} x + 9 ← is in slope- intercept form

with y- intercept c = 9

then the line crosses the y- axis at (0, 9 )

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2 years ago
ANSWER PLEASE ILL MARK BRAINLIEST
kicyunya [14]

Answer:

The answer is D 1, your welcome

5 0
3 years ago
Read 2 more answers
N/2 + 3 = 7 (n/2 is a fraction)
pishuonlain [190]

Answer:

n=8

Step-by-step explanation:

n/2+3=7

-3 -3

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*2 *2

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3 years ago
Professor Blanchard is packing up the books in he office to move to a new location. A small box can hold 44 books and a large bo
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Answer:

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Step-by-step explanation:

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