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3 years ago

What is pi ? ps. just trying this -.-

2 answers:

7 0

'Pi' ( π ) is the ratio of the circumference of a circle to its diameter.

The exact value of 'pi' can't be completely written with numbers, so whenever
we use 'pi', we always use an approximation.

bearhunter [10]3 years ago

7 0

Pi is 3.14, but it also has a symbol,but the symbol is not on my phone, sorry. The symbol also just stands for that number, 3.14. Hope this helps! :)

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A musician spends 90 minutes practicing piano and guitar the time spent is 30 minute less than twice the same time spent on guit

11111nata11111 [884]

Answer:

The which spends on the piano is( 50 minutes )

The which spends on the guitar is( 40 minutes )

Step-by-step explanation:

The steps of the solution in the above photo

I hope that is useful for you :)

8 0

3 years ago

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lana66690 [7]

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2 years ago

Sin a ______ = 1/2 [ sin ( a + b ) + sin ( a - b) ]

Neko [114]

Answer:

Cos b

Step-by-step explanation:

1/2[sin(a+b)+sin(a-b)]

1/2[sin a cos b +cos a sin b + sin A cos B - cos A sin B]

1/2[2sin a cos b]

sin a cos b

6 0

3 years ago

Explain how you would use algebra tiles to solve x - 3 = 7

Andrew [12]

Answer:

Start by laying out 7 tiles, and then adding 3. Whatever that number of tiles is equals x.

x = 10

10 - 3 = 7

7 0

2 years ago

Read 2 more answers

Factor the polynomial expression x4 + 18x2 + 81

Akimi4 [234]

Answer: $(x^2+9)^2$

Step-by-step explanation:

Rewrite it in the form $a^2+2ab+b^2$ , where $a=x^2 and b=9.$

$(x^2)^2+2(x^2)(9)+9^2$

Use Square of Sum: $(a+b)^2= a^2+2ab+b^2$

$(x^2+9)^2$

4 0

3 years ago