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If you reduce something by 10% you are left with 90%.  

90% is 0.9 as a decimal so 14.95 with 10% off is 0.9*14.95 = 13.455  (or 13.46 to 2 decimal places)

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In general:

\(x^n \times x^m = x^{n+m}\)

In your case replace x by 8 , n by 4 and m by 3

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buna

hello

Heii 

He is supposed to sleep outside, he is kinda big you know but he sneaks inside, he hates being outside, especially at night.  He is very scared ofthe dark !  See look what happens to his skin when he is scared    

Thank u Miss Melody! I get it now.

The original number of ducks would be the present number of ducks or 630/ (3/5)=1050.

Hi again Eloise :)

3/5 < p < 2/3

Which of the following could be a value of p?

16/27, 0.67, 60%, (0.8)2, √4/9

Is the 9 supposed to be under the square root too ?

Anyway lets look at these, 

0.6 repeater is 2/3, you should know that... SO  0.67 is more than 2/3 so it is not that one.

60% is 6/10 = 3/5  so that is not BETWEEN those two values ...  so it is not 60%

sqrt(4/9) = 2/3 so it isn't that one

(sqrt 4)/9 = 2/9 that is less than a half so it has to be less than 3/5 so it isn't that one.

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that leaves 16/27  and   (0.8)^2

Which of these could be p where   3/5 < p < 2/3

0.6<p<0.6 repeater

0.8^2 = 0.64   that one is between

2/3 is 18/27  so 16/27 is less than that 

0.6 = (2.7*6)/27=16.2/27 so 16/27 is smaller than that  - too small.

SO    0.8^2 is the only possible one.

If you are using a calc it would be easier just to convert most of them to decimals and then compare the decimal values but if it is an exercise in getting you to understand how numbers work you will learn more if you do not do this.  :)

i solved the same question :/ :(

i think: 

d-ducks

c-chickens

Ziyu has 240 more ducks than chickens in her farm:

d=c+240 or c=d-240

She sold 2/5 of the Ducks: 

d-2/5d=3/5d 

and bought another 450 chickens:

c+450

 As a result the number of chickens is now twice the number of ducks:

c+450=(3/5d)*2

So let s put in term s of c-chickens c=d-240:

d-240+450=(3/5d)*2

d+210=6/5d

210=6/5d-d

210=1/5d

d=210*5

d=1050

Answer:1050

I am sorry but this does not translate properly :/

I am not even sure if it is Indonesian or Malaysian.    

It is pretty simple really Eloise.   

If you can write a number as a fraction then it is RATIONAL.  It is that simple!

Lets see if I can rattle off the definition of a rational number:

"A number is rational if it can be written as p/q where p and q are both integers and p and q have no common factors other than 1"

It helps to know that all terminating and recurring decimals can be written as fractions. :)

But decimals that do not recur or terminate such as pi or sqrt2 cannot be written exactly as a fraction.     

Rational and irrational numbers in Math doesn't mean that some numbers are "sensible or reasonable" and some are "crazy or unreasonable"!!.

Rational, simply means that you can express that number as a "RATIO" of two other numbers. In your numbers: .75 is rational. Why? Because you can express it as RATIO of two other numbers.Example: .75 can be written as 3/4, or 75/100, or 12/16........etc.

An irrational number CANNOT be expressed as a RATIO of two other numbers. Example: Pi. You can NEVER find two numbers such as a/b that will give you Pi.

I'm sure he's huge Melody, though, I do wonder, does he sleep inside or out?

RED is male.

He is a dinosaur!  All of him is big!

It didn't show me a video when I clicked on it...:/

Red is a "he":)

No its just that on the site he gave me, u have 2 watch a utube video. That's what I meant. But thank solviet.

https://en.wikipedia.org/wiki/Irrational_number

OK.... this is just a website.....no 'bandwidth' involved.....

~jc

Lemme go look at my history for private messages, maybe melody told me before...

Oh n thank u guest.