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x to the forth plus square root of 27xsquared minus 27 equal 0

x^4 + sqrt(27x^2) - 27 =0 Is this what you meant by your equation?

x^3-x^2=5x+1 Is this what you mean by your equation?

2656346415734676158736517364576456^2 = 7056176280386460986431186720171678237967569810994744203496269519936

boom. 

Area=[Base x Height] / 2

3/13 x 5/7 = (3 x 5) / (13 x 7) =15 / 91

Cos(45) =1/sqrt(2) =0.7071067......etc.

0.2839285714285714 in mixed fraction

No!. Sqrt(64) =+ or - 8. Theoretically, ALL square roots can be both positive and negative, because:

positive x positive =positive AND negative x negative =positive!.

4.2 x 10³ =4,200

0.2839285714285714 in mixed fraction

=159/560 It is a proper fraction, NOT a " mixed fraction"

its actually rly easy. it will always be above 1 and below 10 million. hope that answered your question :)

b=1.5

LOL Alan.

I like it   :))

Have you not heard the following tongue twister Melody?

Peter Piper picked a peck of pickled peppers.
A peck of pickled peppers Peter Piper picked.
If Peter Piper picked a peck of pickled peppers,
Where's the peck of pickled peppers Peter Piper picked?

Probably not I'd say

ΔABC has A(-2,-2), B(-1,2) and C(2,1). After a dilation centered at the origin, ΔA'B'C' has A'(-4,-4), B'(-2,4) and C'(4,2). What is the scale factor of the dilation?

Pi is an irrational number.  This means that it cannot be expressed as a fraction.  I can not be expressed exactly as a terminating or recuring decimal either.

So even if you had 1 million digits or 9 trillion digits or even more digits it would still only be an approximation of \(\pi\)

I hunted down and found the IMPERIAL P****r     

Well I waanted to know how many pounds that there are in a bushel.

So I looked it up.  I am no wise r about that but I found this

1 imperial bushel = 8 imperial gallons

= 4 imperial pecks

= 36.36872 litres

≈ 8.2565 US dry gallons

≈ 9.6076 US fluid gallons

≈ 2219.36 cubic inches

1 US bushel = 8 US dry gallons

= 4 US pecks

= 2150.42 cubic inches

≈ 9.3092 US fluid gallons

≈ 35.2391 litres

≈ 7.7515 imperial gallons

I never knew where was any such thing a an imperial peck.

 I don't think an imperial peck sounds like a mathematics term.

Solve 2 over x+1 + 3 over x-1 = 5 over x^2-1

  greetings from Germany