$${\mathtt{360}}{\mathtt{\,\small\textbf+\,}}{\mathtt{3\,000}}{\mathtt{\,\times\,}}{\mathtt{0.12}} = {\mathtt{720}}$$

$${\mathtt{360}}{\mathtt{\,\times\,}}{\mathtt{0.12}}{\mathtt{\,\small\textbf+\,}}{\mathtt{3\,000}} = {\mathtt{3\,043.2}}$$

19

15% of 15,000

3x-4y=7, for x

3x-4y=7      Add plus 4y to both sides

3x-4y+4y=4y+7        So +4y-4y=0

3x=4y+7      Divide both side by 3

$${\frac{{\mathtt{3}}{\mathtt{\,\times\,}}{\mathtt{x}}}{{\mathtt{3}}}}$$ = $${\frac{\left({\mathtt{4}}{\mathtt{\,\times\,}}{\mathtt{y}}{\mathtt{\,\small\textbf+\,}}{\mathtt{7}}\right)}{{\mathtt{3}}}}$$    So $${\frac{{\mathtt{3}}}{{\mathtt{3}}}}$$ cancel each other

$${\mathtt{x}} = {\frac{\left({\mathtt{4}}{\mathtt{\,\times\,}}{\mathtt{y}}{\mathtt{\,\small\textbf+\,}}{\mathtt{7}}\right)}{{\mathtt{3}}}}$$     This is your answer, though you don't need the brackets and the multiplication sign between the 4 and the y, this is just the way the built in calculator formats it.

Some calculators do have a negative number input, it could have this symbol on it +/-. Each time it was pressed it would cycle through + or -.

If yours doesn't have this you can make a number a negative number by typing it within brackets and preceeded by the negative button. e.g. if i wanted to type negative 15 I would type (-15).

On its own there wouldn't be much point doing this so you could have something like this 22(-15)=-330   This would be the same as writting 22*-15=-330.

(10t⁴+14t³)+(3t³-22t⁴)

We don't really need brackets here as addition and subtraction are done at the same time in the order of operations. However, if we follow the order of operations we find that we can't do anything within the brackets as the brackets don't contain like terms that can be combined. We also find that we can't apply any of the exponents as they all apply to mixed terms of numbers and algebraic characters. All we can really do is combine like terms outside of the brackets.

We can combine 10t⁴ and -22t⁴ as they share t⁴.

We can then combine 14t³ and 3t³ as they share t³.

(10t⁴-22t⁴)+(14t³+3t³)

= -12t⁴+17t³

2x10^3

8 divided by 4 is 2 

By subtracting the indices you get 10^3 (7-4)

A  two dimentional circle doesn't have a 'volume' but an 'area'. Spheres have volumes:

$$V = \frac{4}{3}pi*r^3$$

a-(-b) = a + b

Pairs of minuses cancel out, thus:

If there's an odd number of minuses, it gets minus.

If there's an even number of minuses, it gets plus.

It's difficult to help with this as there isn't enough information to go on.

Is it that you want to know what  $${\frac{{\mathtt{2}}}{{\mathtt{15}}}}$$ of a minute is?

Let x=y.
We can multiply each side by y to get:

Subtract x^2 from both sides to get:

Factor each side to get:

The common factors of (y - x) cancel out to get:

Given that y = x, we can conclude that:

And so therefore:

Thus:

So:

And:

Then:

Finally:

You can try inputting a/b and it will show up as $${\frac{{\mathtt{a}}}{{\mathtt{b}}}} = {\frac{\underset{{\tiny{\text{Error: Unknown Identifier}}}}{{\mathtt{a}}}}{\underset{{\tiny{\text{Error: Unknown Identifier}}}}{{\mathtt{b}}}}}$$

Here is a wonderful site I have found for you.

http://www.rapidtables.com/calc/math/anti-log-calculator.htm

This is actually a pretty legit question.

It depends on how much fries or mcnuggets you want.

So I came up with this.

A Ten Piece Mcnuggets is $8.99

A large Fries is &1.79

So 8.99/7.79 = 5.0223463687150838

Or you can round that to 5.

So to answer your question, 5 Fries = 1 Ten Piece Mcnuggets.

Hope this answers your question! XD

(x - y)/z = a    Multiply (*) both sides by z

x - y = az        Add (+) y to both sides:

x = az + y

77 1/3 = 232/3

$$52\frac{1}{2}min/one..hour$$

Turn the mixed numbers into an improper fraction using this formula (can you see why it's true?):

$$a\frac{b}{c}=\frac{ac+b}{c}$$

We get:

$$52\frac{1}{2}=\frac{52*2+1}{2}=\frac{105}{2}$$

So we have 105/2 min's. We know that there's 60 min's in an hour, so we get:

$$\frac{105}{2}/60 = \frac{105}{2*60}=\frac{105}{120}=\frac{105/15}{120/15}=\frac{7}{8}$$

And this sounds correct, since 52.5 min's ≈ an hour

(105/2)/(60/1)

(105/2) * (1/60)

105/120

simplified

(105/120)/5

(21/24)/3

7/8 hours

C= starting value | I= decreing interest | x= year     

C(1-i)^x

18000(1-0.12)^8

18000(0.88)^8

18000(0.3596...)

$6473.42

$${\mathtt{10}}{\mathtt{\,\small\textbf+\,}}{\mathtt{9}} = {\mathtt{19}} = \tiny\text{Error: }$$

Thanks for the help

Thanks both for the help. I didn't understand the problem.