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21 is the answer a kid gave when asked the question 

You mean the value of Pi?

It starts like this and goes on forever.....it never ends:

3.1415926535897932384626433832795............FOREVER!!!!!!.

CPhill thank you/I unerstood everuthing thants to you,bu i have another question?is that necessary to add brackets at the denominator ?

5/9(50 - 32 )  =

(5/9) (50- 32)  =

(5/9) (18)  =

[ 5 * 18 ] / 9  =

90/ 9 = 

10

18

Velocity is the derivative of the position function, and acceleration is the derivative of the velocity function.

2³

Let me show you a way to solve this....    

1 / [ x^2 - 1] >= 1/ [x - 1]       and we can write

1/[x^2 - 1] - 1/[x - 1]  >= 0     and getting a common denominator, we have

-x / [ x^2 - 1] > = 0   

Note that this function  does not exist at -1 or 1 because that would make the denominator 0

And note that when x = 0, the inequality is true

So the solutions  come from one, or more, of these intervals :

(-infinity, -1), (-1, 0], [0, 1), (1, infinity)

Notice that if x < -1  the inequality is true

And if   -1 < x < 0     the inequality is false

And if   0 <= x < 1   the inequality is true

And if   x > 1, the inequality is false

Here's the graph :  https://www.desmos.com/calculator/5qbwbakrao

2^7=128

Try this formula and consult your book.

 V²=U²+2AS,
WHERE V=FINAL VELOCITY
               U=INITIAL VELOCITY
               A=ACCELERATION
               S=DISTANCE OF ACCELERATION

7892.837 rounded to the nearest one,

How about 7,893

When you are given one side and one angle.

How do you put 925,000,000,000 in decimal,

It's already in decimal!. If you mean scientific notation, then:

9.25 X 10^11, or the reciprocal of it(which means 1/925,000,000,000=1.0810 X 10^-12.

THAT'S WRONG EQUATION!!!!!!!!!!!!!!!!!!!!.

Fractions don't repeat but decimals do, such as 1/3=.3333333333333333333......and so on.

|(-22)(-59)|

22 X 59=1,298

Is that right CPhill?

³root(-162)  = ³root(-1* 2 * 3^4)   =  -3 * ³root(2 * 3)  = - 3 * ³root(6)

The number π is a mathematical constant, the ratio of a circle's circumference to its diameter, commonly approximated as 3.14159. It has been represented by the Greek letter "π" since the mid-18th century, though it is also sometimes spelled out as "pi".

3.14159

however, pi does continue infi nitly

it is the circumfrence of the circle divided by the diameter

p - 4  = -9 + p     rewrite as

p - 4 = p - 9

This has no solution.......we can't subtract two different numbers from the same thing and end up with equal things.....!!!!

4 - Blank = -31      add Blank, 31 to both sides

4 + 31  = Blank

35 = Blank

OK, will give you as many as you want:

2, 3, 5, 7, 11, 13, 17............etc.

A prime number is one that has no factors except itself and 1

7 is a good one

Let be the number....and we have...

[N - 14] x 3