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Lady_Fox [76]
3 years ago
7

What is the smallest possible value for x when

Mathematics
1 answer:
stepan [7]3 years ago
8 0

Answer:

a

Step-by-step explanation:

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The number obtained on rationalizing the denominator of 1/(√7--2) is
Slav-nsk [51]

\frac{1}{ \sqrt{7}  -(- 2)}  \\ rationalizing \:  \:  \: the \:  \:  \: denominator \:  \:  \: we \:  \:  \: have \\  =  \frac{1}{ \sqrt{7} + 2 }  \times  \frac{ \sqrt{7}  - 2}{ \sqrt{7}  - 2}  \\  =  \frac{ \sqrt{7}  - 2}{ {( \sqrt{7} )}^{2} -  {(2)}^{2}  }  \\  =  \frac{ \sqrt{7} - 2 }{7 - 4}  \\  =  \frac{ \sqrt{7}   - 2}{3}

Hope you could get an idea from here.

Doubt clarification - use comment section.

3 0
2 years ago
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A sailboat travels a distance of 2 1/2 miles in 1/6 of an hour. Which complex fraction represents the unit rate in miles per hou
Nikitich [7]
At first glance, prolly c
3 0
3 years ago
Need help please !!!!!!
11Alexandr11 [23.1K]
A perfect square must be hidden within all of those radicands in order to simplify them down to what the answer is.  \sqrt{192}= \sqrt{64*3}= 8\sqrt{3}.  \sqrt{80}= \sqrt{16*5}=4 \sqrt{5}.  \sqrt{12288}= \sqrt{4096*3}=64 \sqrt{3}.  The rules for adding radicals is that the index has to be the same (all of our indexes are 2 since we have square roots), and the radicands have to be the same.  In other words, we cannot add the square root of 4 to the square root of 5.  They either both have to be 4 or they both have to be 5.  So here's what we have thus far: 8 \sqrt{3}+4 \sqrt{5}+64 \sqrt{3}.  We can add 8 \sqrt{3} and 64 \sqrt{3} to get 72 \sqrt{3}.  That means as far as our answer goes, A = 72 and B = 4, or (72, 4), choice a.
5 0
3 years ago
How tall is this table?
inn [45]

Answer:

Table: 105 cm

Step-by-step explanation:

"m" = mouse

"c" = cat

"t" = table

equations:

t + c - m = 120

t - c + m = 90

___________

2t = 210

t = 210/2 = 105

Hope this helps

7 0
3 years ago
Answer plzzzzzzzzzzzzzzzzz
Anit [1.1K]

Answer:4 is your answer

Step-by-step explanation:

4 0
3 years ago
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