All Answers 358516 Answers

radius of 7cm and height of 12cm (work out in terms of pi)

I assume you want the volume in terms of pi

So we have

Vc = pi * r^2 * h

Vc = pi * (7)^2 * 12  =  pi * 588 =   588pi cm^3

32a^4-4ab^9   

I assume you want to factor this

4a (8a^3 - b^9) =    {the second expression can be factored as a difference of cubes}

4a (2a - b^3)(4a^2 + 2ab^3 + b^6)

(2.4x10^4)+(3.2x10^3)  =

24000 + 3200 =

27200 =

2.72 x 10^4

The profit is given by

168 (5 - .48 - .09 - 1.35 ) =

168 ( 3.08)  =

$ 517.44

I assume that you want to find the roots (zeroes) of this...so we have

18x^3-63x^2+9x = 0      divide through by 9

2x^3 - 7x^2 + x  = 0      factor

x (2x^2 - 7x + 1) = 0      one solution is x = 0

For the polynomial in the parentheses......we can use the onsite solver

$${\mathtt{2}}{\mathtt{\,\times\,}}{{\mathtt{x}}}^{{\mathtt{2}}}{\mathtt{\,-\,}}{\mathtt{7}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,\small\textbf+\,}}{\mathtt{1}} = {\mathtt{0}} \Rightarrow \left\{ \begin{array}{l}{\mathtt{x}} = {\mathtt{\,-\,}}{\frac{\left({\sqrt{{\mathtt{41}}}}{\mathtt{\,-\,}}{\mathtt{7}}\right)}{{\mathtt{4}}}}\\
{\mathtt{x}} = {\frac{\left({\sqrt{{\mathtt{41}}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{7}}\right)}{{\mathtt{4}}}}\\
\end{array} \right\} \Rightarrow \left\{ \begin{array}{l}{\mathtt{x}} = {\mathtt{0.149\: \!218\: \!940\: \!641\: \!787\: \!8}}\\
{\mathtt{x}} = {\mathtt{3.350\: \!781\: \!059\: \!358\: \!212\: \!2}}\\
\end{array} \right\}$$

And that's it.....!!!!!

1/5+(3/5)x =2/x      multiply through by 5x

x + 3x^2 = 10         rearrange

3x^2 + x - 10 = 0   factor

(3x - 5) (x + 2) = 0     and setting each factor to  0, we have x = 5/3  or x = -2

that is so not nice!!!!!!!!

We have

S = rΘ   where S is the arc length, r is the radius, and Θ is in radians ... so we have

S = 7 *  pi/3 = 7*pi/3 = about 7.33 in

The answer is given by

$(97 * .80) * 1.10  ....    ???

You can take it from here....

$${\mathtt{200\,000.28}}{\mathtt{\,\times\,}}{\mathtt{320\,748\,922}}{\mathtt{\,\small\textbf+\,}}{\mathtt{486\,291}} = {\mathtt{64\,149\,874\,695\,989.16}}$$

Same way you did every time before you asked today.

The √ and then type your number.

Go under sticky topics. You will find it there.

$${\mathtt{180\,000}}{\mathtt{\,\times\,}}{{\mathtt{3\,600}}}^{{\mathtt{2}}} = {\mathtt{2\,332\,800\,000\,000}}$$

$${\frac{{\mathtt{30}}}{{\mathtt{5}}}} = {\mathtt{6}}$$

So x is 30

Well then...

Your guess is as good as mine.

Yeah, maybe stop with math for awhile and work on your english. LOL

$${\mathtt{1.92}}{\mathtt{\,\times\,}}{\mathtt{168}}{\mathtt{\,-\,}}{\mathtt{5}}{\mathtt{\,\times\,}}{\mathtt{168}} = -{\mathtt{517.44}}$$

$${\mathtt{1.25}}{\mathtt{\,\times\,}}{\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{x4}}$$

1*9=9 

its 19 not 10

9 plus 10 is simple really. its 10