सदस्य: Melody

sp3ctr3:
Well, a scientific notation to be correct can only have one digit to the right of the decimal place. (Ex.: 1.0*10^1, 2.598468*10^19)
As a result, you have to modify the 4600*10^-22 to become 4.600*10^x.
If you break down 4600 into scientific notation, it is 4.6*10^3. So -3, from the scientific notation of 4600, + -22, from the scientific notation of the original number, = -19. So the answer would be 4600*10^-22 = 4.600*10^19.

Hi Sp3ctr3,
Thanks, that was a great answer, I am sorry to be posting over you but you made a little error at the end of your post. You forgot a minus sign
also, 4.600 is the same as 4.6
so
4.6 x 10 ^-19 is a slightly better answer unless you know for sure that the 2 zeros are significant. (which you don't know)

If you want I will delete this post when you fix up your post.

Melody13 Jan 2014

+118691

CARO:
[size=200][color=#FF00BF][/color][/size]if my friend and i ordered items at a total of $20.00 and i gave her $10.00 so we are 50% and 50% of all cost. She bought an item that was about $12.00. So the $12.00 dollars of the item that has nothing to do with me is mine.

If her item was $12 and the whole $20 was spent, that means your item was $8.
Hence, maybe she owes you $2 or
maybe you get to use her item one sixth of the time (because 1/6 of it is yours) or
maybe you are just a good friend and you call it even

Melody13 Jan 2014

+118691

Hi Spc,
Your answer is not completely correct.

By convention, sqrt(25)=+5
Whenever the square root is actually written into the question only the positive answer counts.

However, if the question was
x ² = 25
then your answer is
sqrt(x ²) = sqrt(25)
This time the square root was not a part of the question, I introduced it as a part of the working so the answer is
x = +5 or -5

Melody13 Jan 2014

+118691

hunter630:
:?: molly has 7 yards of ribbon. it takes 3/4 of a yard of ribbon to make a bow. how many bows can she make?

Think about this
If you had 8 yards of ribbon and it takes 2 yards to make a bow, then the number of bows that you can make is 8 divided by 2 = 4

Your question is the same only the numbers are yuckier. You do it the same way.

Melody13 Jan 2014

+118691

Rio x:
How to find the length of the third side if it isn't a right angled triangle?

You would use the sine rule or the cosine rule depending on what other information that you have.

Melody13 Jan 2014

+118691

rororo707:
three equation system of equations

This is not a question

Melody13 Jan 2014

+118691

val:
[size=150]What is 6 trillion x 4.4= [/size]

(6 x 4.4) trillion

Melody13 Jan 2014

+118691

mandy559:
x/2 = 9 - x/2

start by plussing x/2 to both sides and then see what you have

Melody13 Jan 2014

+118691

Extr4_cr1zby_313:
A box of cereal must weigh more than 629.4 g and less than 630.6 g to pass inspection. The box in which the cereal is packaged weighs 5.5 g. What are the possible weights for the cereal?

Well Extr4,
The cereal and the box put together must weigh between the two values given. The box weighs a set amount, so the cereal must weigh between two amounts.
Can't you work it out?
-----------------------------------------------------
Maybe just think about the lightest possibility first and then think about the heaviest possibility
----------------------------------------------------
Whenever the numbers in a problem make it mind boggling, you can try replacing those numbers with easy ones and see what you would do, then you can copy the technique onto the hard problems.
So maybe with this one you can think about a big packaged toy. Altogether it weighs 20kg, If the packaging weighs 1kg, how much does the toy weigh?
--------------------------------------------------------
Have a think and see if you can work it out for yourself

Melody13 Jan 2014

यूजर का नाम	Melody
स्कोर	118691
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