NinjaDevo

$$12 can be written as $\frac{12}{1}$, so now we have:\\
$\frac{1}{4} - \frac{12}{1}$\\
The problem here is that we don't have a common demoninator. Let's multiply $\frac{12}{1}$ by $\frac{4}{4}$ to get a common denominator. \\
We can do this because $\frac{4}{4}$ is really the same thing as 1, and if you multiply any number by 1, you will get that original number.\\
For example, \\
$5\times 1 = 5$\\
$99\times 1 = 99$, etc...\\\\
So, let's multiply $\frac{12}{1}$ by $\frac{4}{4}$\\
$\frac{1}{4} - (\frac{12}{1}\times\frac{4}{4})\\\\
\frac{1}{4} - (\frac{48}{4})\\\\
-\frac{47}{4}$\\\\
And there we go! our answer is $-\frac{47}{4}$$$

Zero.

Zero is an integer and its recriptocal is 1/0....which is 0.

Now, technically speeking, 1/0 is unknown or undefined, because you can't divide a number by 0 in math.

First we need to find 12% of £24.80, then subtract that from the total cost to get the new price.

12% of £24.80       --- "of" means to multiply

12% x £24.80        ---12% can be written as a decimal by removing the percent and moving the decimal over two places to the left

0.12 x £24.80

£2.976            ---Round up

£2.98

So she got a £2.98 discount, but that isn't what she paid. To find what she paid, subtract 2.98 from 24.80.

24.80 - 2.98 = 21.82

She got the Easter hamper for £21.82.

This is a little beyond me. I have an idea how to solve it but I'd rather you have someone who is familiar with questions like these to solve this for you. :)

Hm. I don't think we need the perimeter.

We have the length and the width and we want to find the area. To do so, multiply legnth times width.

$$\begin{array}{l}
Area = length\times width\\
Area = (x+5)\times (3x-2)\\
\end{array}$$

Now we need to multiply this out. Remember FOIL!

So, in square feet, in terms of x, our area is 3x² + 13x - 10 sq. ft.

There is missing information here. We need the dimensions of these rooms.

I think we need to know what temperature the coffee is at presently.

"of" can be interpreted as multiplication, so we have:

2/3 * q = 14        ---Divide both sides by 2/3

q = 14 ÷ 2/3       ---To divide a fraction, multiply by the reciprocal (in other words, flip the fraction) 

q = 14 * 3/2

q = 42/2

q = 21

To write a fraction on a computer, use the / sign.

So you would then write a fraction like 3/4, where the first number is the numerator and the second is the denominator.

Treat this like a long division problem, and let each term (like 3x^3) be like a number in a normal long division problem. Here's how'd you'd solve it:

I added 0x^2. This is really just a placeholder, or in other words, it doesn't need to be there. I just put it there to show you how it all lines up.