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nalin [4]
3 years ago
14

Write 3/4 as a sum of unit fractions

Mathematics
1 answer:
BaLLatris [955]3 years ago
7 0

Answer:

1/4+1/4+1/4

Step-by-step explanation:

Divide 3 by 4 which is 0.75, since we need to break it into three fractions , divide it again by 3 which will bring 0.25.

Now convert it into fraction which is 1/4.

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Which of the following is true about the graph of f(x)=7^x. Select all that apply.
marishachu [46]

Answer:

D

Step-by-step explanation:

If it intersects the x axis, then y = 0. This is not possible, as you can plug in x to be 1/100000000000000000000000000000000000, or something very tiny, but it will never get 0. So, A is not a choice.

This also means B is not a choice.

If C is a choice, then it does not intercept the y axis, or x cannot be 0. This is not true, because (0, 1) is on the graph.

Finally, we have D. It intercepts the y axis (we have proven this in C). So, this is the only answer choice that is correct.

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2 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
Read 2 more answers
chegg evaluate the following integral using trigonometric substitution. dx/square root(x^2-81), x > 9
vesna_86 [32]

Integration will be ln | ( x /9 ) + ( \sqrt{(x/9)^{2} - 1 } ) | + c  .

Given  ∫ 1 dx / ( x^{2} - 81 )

Put ,

x = 9 secθ

dx = 9 secθ tanθ dθ

and

\sqrt{x^{2}  - 9^{2} } = 9 tanθ

Substituting values in  ∫ 1 dx / ( x^{2} - 81 ) ,

∫ (9 secθ tanθ ) dθ / ( 9 tanθ )

∫ secθ dθ = ln | secθ + tanθ | + c

                = ln | ( x /9 ) + ( \sqrt{x^{2}  - 9^{2} } / 9 ) | + c

              = ln | ( x /9 ) + ( \sqrt{(x/9)^{2} - 1 } ) | + c

Hence , the integration will be ln | ( x /9 ) + ( \sqrt{(x/9)^{2} - 1 } ) | + c .

To learn more on integration follow link :

brainly.com/question/20156869

#SPJ4

6 0
1 year ago
Start time: 3:30 PM<br> End time: 7:00 PM<br> Elapsed time:
JulijaS [17]

Answer:

3hr 30min

Step-by-step explanation:

3hr 30min

5 0
3 years ago
Brett has a $60 online gift voucher.He plans to buy as many books as he can.Each book is $7.There is also a shipping charge of $
QveST [7]
Brett can buy 10 books with 60$
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3 years ago
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