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Your dog needs to go to the veterinarian. You should take better care of him.

GuestJan 28, 2014

+118725

loveyou:
wht do I do with my life.. everyone talks behind my back... can someone plzz reply ... I love u all...

YOU DO STUFF.

If you are busy then your don't have time to worry about what people may or may not say or think behind your back.

You can do anything, so long as it doesn't hurt yourself or anyone else. Find things that you like doing and DO THEM.

MelodyJan 28, 2014

+118725

Tornike:
1/3sqrt(27

Hi Tornike ans reinout-g,

I had a different interpretation again of what i think Tornike meant.

I think he meant 1/3 * sqrt(27)

= 1/3 * sqrt (9*3)
=1/3 * sqrt9 * sqrt3
=1/3 * 3 * sqrt3
= sqrt3

There you go Tornike.
You've got lots of answers to choose from.

MelodyJan 28, 2014

v****a

GuestJan 28, 2014

+46

Jedithious:
The contestants in a chess tournament were numbered from 1 to 18. When the players were paired for the first game, the sum of the two numbers for each pair was a perfect square. What were the pairings for the first game?

PuzzledJan 28, 2014

+118725

maria:
log8.12

What is the problem? Just put log 8.12 = into your calculator.
I am assuming that this is base 10.

MelodyJan 28, 2014

olden:
( 8/9 )3=

GuestJan 28, 2014

+118725

That's great Anonymous 4338

try this one
5(a+4)=6-(a-9)

This question is much harder. You do know how to expand brackets don't you?
HINT: there is an invisable 1 between the minus sign and the bracket.

MelodyJan 28, 2014

+118725

MelodyJan 28, 2014

+5478

if an ant walk 19cm in minute how far does it walk if the perimeter is 3m by 4m.

Do you mean how long it will take for it to walk that perimeter?

First, find the total length of the perimeter:
I'm assuming it is a rectangle/parallelogram.
So there will be two sides with the length of 3m, and two sides with the length of 4m.

The perimeter would be:
P=2(3) + 2(4)
P=6+8
P=14

This is in meters, and one meter equals 100 centimeters.
To find 14 meters in centimeters, multiply it by 100.

That would be 14000 cm.

Now, you can use a ratio to find the time:
19cm/1=14000/x

kitty<3Jan 28, 2014

1. move the x values to one side of the equation (value changes from positive to negative)
150x -60x +35=60x - 60x
90x+35=0
2. Move the 35 to other side of the equal sign (value changes from positive to negative)
90x+35-35=-35
90x=-35
3. Divide 90x by 90, and divide -35 by 90
90x/90=-35/90
x=-7/18

GuestJan 28, 2014

+56

No problem glad to help.

WaltJan 28, 2014

+154

Hello Walt,

That helped very much indeed. Not only did you give me a precise formula that explains the structure of this general type of problem but you left me the fun of solving it.

Thanks

JedithiousJan 28, 2014

#61

+56

(33*11-(55-22))+3=333

WaltJan 28, 2014

+56

Hey Jeidithious

(a+b+c+d+e+f)=x

(x)/6=33

(x)=198

(198+4a)/10=39

Solve that equation for a and you got your numbers. Hope this helps.

WaltJan 28, 2014

I'm not sure if there is a formula for this type of question but I just went through counting up all the groups. My answers are:
(1,15) (2,14) (3,13) (4,12) (5,11) (6,10) (7,18) (8,17) (9,16)

GuestJan 28, 2014

Noj age = X

Jacob age = X-5

So X(X-5) = 84

X ² + 5X - 84 = 0

or (X-7)(X+12)=0

Jacob is 7

Finish it !

GuestJan 28, 2014

Jan 27, 2014

The diameter would be 7.2

GuestJan 27, 2014

Circumference is the length around the circle. For instance, if you were to travel around the world, you would travel the circumference of the world. Have a good day!

GuestJan 27, 2014

+42

wow that 100

loveyouJan 27, 2014

the equation is called an equation because both side are equal to one the other.

so g-2 = -8 to solve for g you must add a positive 2 to each side of the equation

therefore g -2 +2= -8 + 2

g = -8 + 2 the -2 plus the +2 cancels each other

g = -6

GuestJan 27, 2014

+2354

BillyClue:
72 – 3(42 – 23) x 3

The order of operations is as follows,
1) brackets (that's what they are for!)
2) exponents and roots,
3) division and multiplication
4) addition and substraction

This means, we first need to compute 42-23 = 19
Then we go to the multiplication (is doesnt matter whetter you do 3 x 19 or 19 x 3 first)
This gives 3 x 19 = 57 => _{(do not write =, then you could write 2 = 2 + 1 = 3 which means 2 = 3 while you mean 2 => 2+1 = 3)} 57 x 3 = 171
Then finally we have 72 - 171 = -99

reinout-gJan 27, 2014

+2354

I will give you some hints toward the solution;

I don't know what the exact translation is, but i hope you know what I mean if I say I write C ^p _q as the combination of 'p above q'

Then the binomial expansion is given as (a+b) ⁿ = C ⁿ _na ⁿb ⁰ + C ⁿ _(n-1)a ^(n-1)b+C ⁿ _(n-2)a ^(n-2)b ²+....+C ⁿ ₀a ⁰b ⁿ

For each term we can write C ⁿ _ra ^(n-r)b ^r (basically, the above is the sum of this general term for r is all integers between 0 and n)

So what we want to do is make C ⁿ _ra ^(n-r)b ^r constant for (x-1/x) ⁴

We take a = x, b = -1/x and n = 4. Then we need to find an r which gives an x ⁰ in C ⁿ _ra ^(n-r)b ^r so that this general term no longer depends on x.

so try filling in these variables in C ⁿ _ra ^(n-r)b ^r and rewrite it such that it looks somewhat like this x ^{something with r} * some other function without x and then equate 'something with r' = 0 to find the value of r. Then fill in r in the general term and you have the constant.

Hope that will work for you.

reinout-gJan 27, 2014

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