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Yes this is correct :)

6⁵

is entered as 6^5

 what is the square root symbol x=6 ? someone please help me

\(\sqrt{x}=6\\ (\sqrt{x})^2=6^2\\ x=36 \)

what is 6 and 5/8 times pi

(6+5/8)*pi = 20.8130513300323802

For the general quadratic ax^2 + bx + c = 0 there is just one solution when b^2 - 4ac = 0, so here:

5^2 - 4*7*(-h) = 0   or h = -25/28 as given by Guest #1

Divide the ultimate stress by the safety factor.

I think it's meant to be interpreted as follows:

.

What is Pi?

Pi is both an irrational number, and an infinite number. They mean the same thing. It is in relation to geometry and is used in a whole lot of formulas. Pi isn't a fraction, and you can't put it as one. It is however, used in the formula c over d, or circumference over diameter. That's really the heart of Pi. The circumference of a circle divided by the diameter. It comes out as 3.141592653589793238462643383279, and that's just for starters. There are online Pi generator sites and to world record for generating Pi digits is into the billions. There is a world Pi day and competitions for remembering as many digits of Pi as possible. Anyway, for most people this is way blown out of proportion and not useful for day to day calculations. For those, people generally use 3.14 or, if you want to be just that little more precise, 3.141. And about those formulas. Well, geometrists use them for finding out the area of a circle, or a sphere. To find out the area of a circle, you use the formula: area = pi * radius squared. To find ou the volume of a sphere, you use the formula: volume = 4 over 3 * Pi * radius squared. And there are many, many, many more uses of Pi. Even the greatest of physicists, like Albert Einstein, used Pi in his amazing calculations

So that's Pi at it's core. Now it's up to you to choose how you use this incredible number.😀😀😀

I am confused.  Are you referring to North South as the vertical and East west as the Horizontal?

Do you mean that the grape begins its flight at 20 degrees of the vertical?

What have compass directions got to do with this question.  ??

Hi Kreyn,

Welcome to the Web2.0calc forum :))

Yes, you are right, old questions and responses to them can get lost very easily here.  I think I do see most responses - I have learned a few tricks I guess, but i admit that I would miss some.  :(

If you respond and you are not sure I will see it then send me a private message and include the address ofthe question so I can just  hyperlink to it.

x≤y≤z=36

then again...

If z=36 then

x<=y    y<=36

See the graph.

Where the 2 graphs overlap will satisfy the given condition (assuming I have interpreted your question as intended)

This notation is nonsense.

I am not comfortable with your wording in this question but I will readily admit that I do not know if that is the fault of the question or if it is just because of a hole in my knowledge.  I am not very comfortable with set theory.

Is it 6.9 or 6,9?  I'll assume 6,9

Let R be a relation on A={2,3,4,6.9)defined by "x is relatively prime to y"., that is the only positive divisor of x and y is 1.

a) write R as an ordered pair

b)Draw a digraph representing R

c)Find the in-degree and the out-degree of each vertex 

d)List all paths of length 4 starting from vertex 3

e)Compute R2      and draw the digraph

If x and y are subsets of A subject to the given condition then it seems to me that

(2,3) (3,2), (2,9), (9,2), (3,4), (4,3), (4,9), (9,4)

are all possible combinations of R

No I guess I do not understand the question. :(

Thanks heaps!

Sorry I didn't mean to be rude, just wasn't sure if you would see a comment that I posted on the other thread :D.

I definately appreciate your help!

I'll make an account for next time I have a problem :p. 

Hi Guest,

I answered this question in some detail yesterday.

I do understand that you are just asking for clarification but it would be polite for you to comment and to say thanks on my original response.

It would also be better for you to become a member because it is much easier to track your questions.  (They are automatically put on your watch list) and you can get email alerts if someone answers you.

PLUS we get to know you and members, especially conscientious and polite members, get more attention from answerers.  I usually answer member questions before I answer other questions :)

Ok now the lecture is over.

Yes, when you have one polynomial = another polynomial

the coefficients of like term must be equal.

so for instance, if

\(a_1x^7 +a_2x^6 +a_3x^5 +a_4x^4 +a_5x^3 +a_6x^2 +a_7x^1 +a_8= b_1x^7 +b_2x^6 +b_3x^5 +b_4x^4 +b_5x^3 +b_6x^2 +b_7x^1 +b_8\\ then\\ a_1=b_1, \quad a_2=b_2, \quad a_3=b_3, \quad a_4=b_4, \quad a_5=b_5, \quad a_6=b_6, \quad a_7=b_7, \quad a_8=b_8 \quad \)

When I answered your question before I did not expand the whole algebraic multiplication.

I did not need to because I was only interestest in the coefficients of the x^2 terms.

So yes I think you have a full understanding of how this works :)

120+((30/100)*120) = 156

The perfect squares:  1, 4, 9, 16, 25, 36, ...

are closed with respect to multiplication

because:

Since each member of the set of perfect squares has a square root that is a whole number, 

let the set of square roots be:  1, a, b, c, d, ...

then the set of perfect squares is:  1, a², b², c², d², ...

Choose any two members of the set of perfect squares, say  x²  and  y²,

then  x²·y²  =  (xy)²,  which is a perfect square.

So if I'm understanding this correctly, bx^2 - 2x^2 = bx^2 (as per the general polynomial expression). Therefore as these 2 equations can be equated, you can match up the bx^2 values of both sides to equal each other?

This can also be done for any other variable too, and as c = -2c on the LHS and +30 on the RHS, c = -15.

h =   -  25/28

 0.0065 = 

6.5   x   10^-3

11 and 11/64   inches

1+1=2

~20.81305133 (6.625*pi).

1620: 0.36*4500 or 36*45 (I can't find that symbol on my keyboard).