Shadowbolt04

$${\mathtt{17\,000}}{\mathtt{\,-\,}}{\frac{{\mathtt{1}}}{{\mathtt{3}}}} = {\mathtt{16\,999.666\: \!666\: \!666\: \!666\: \!666\: \!7}}$$

Putting x^2 will give you $${{\mathtt{x}}}^{{\mathtt{2}}}$$. On Windows computers, to type ^, hold Shift and press 6 at the same time.

$$\underset{\,\,\,\,{\textcolor[rgb]{0.66,0.66,0.66}{\rightarrow {\mathtt{x, y}}}}}{{solve}}{\left(\begin{array}{l}{\mathtt{x}}={\mathtt{\,-\,}}{\frac{{\mathtt{1}}}{{\mathtt{4}}}}{\mathtt{\,\times\,}}{\mathtt{y}}{\mathtt{\,\small\textbf+\,}}{\mathtt{5}}\\
{\mathtt{3}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,\small\textbf+\,}}{\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{y}}={\mathtt{0}}\end{array}\right)} \Rightarrow \left\{ \begin{array}{l}{\mathtt{x}} = {\mathtt{8}}\\
{\mathtt{y}} = -{\mathtt{12}}\\
\end{array} \right\}$$

If you are asking for the amount of money reduced, it is $15

If you are asking for the percentage of money reduced, it is 25%.

The / sign suffices as the fraction sign. Writing 1/2 is the same as writing $${\frac{{\mathtt{1}}}{{\mathtt{2}}}}$$.

Think about what is a reasonable size for 30 inches as a circumference of an object.

A car tire is too big. It would probably be way more than 30 inches.

A volleyball seems like a reasonable size. Let's check the last one to be sure.

A marble is definitely less than 30 inches. It is way smaller than that.

The only reasonable choice would be B. Volleyball

$${\mathtt{2}}{\mathtt{\,\times\,}}\left({\frac{{\mathtt{1}}}{{\mathtt{8}}}}\right) = {\frac{{\mathtt{1}}}{{\mathtt{4}}}} = {\mathtt{0.25}}$$

Fixed it.

Look at the place you want to round to. I'll call it the place. I'm using the tenths place as an example.

    4.1431      7.7923

Look one place directly to the right of it. I'll call that the digit.

    4.1431     7.7923

If the digit is 0, 1, 2, 3, or 4, the place stays the same. If the digit is 5, 6, 7, 8, or 9, the place increases by 1. All numbers behind the place become zeroes.

    4.1431 ----> 4.100 or 4.1      7.7923 ----> 7.800 or 7.8

You may have to do this. 

    1.9503 ----> 2.0000 or 2

Most problems specify the place you need to round to.

Note that if you aren't rounding to a decimal, the zeroes cannot be omitted (ignored).

$$Thanks!$$

$${\frac{{\mathtt{43}}}{{\mathtt{7}}}} = {\mathtt{6.142\: \!857\: \!142\: \!857\: \!142\: \!9}}$$

58 is the answer. Do the exponent first. 6^2=36. Then 36/2=18. Next 18(3)=54. Finally 54+4=58. 2(3) is the same as 2*3.