Melody

Nice answer Dragonlance  

(3.33 10-4 m) ✕ (3.25 10-5 m)

I expect that you mean

\((3.33* 10^{-4 }m) \times (3.25 *10^{-5} m)\\ 3.33*3.25*10^{-4 }*10^{-5} m*m\\ 3.33*3.25*10^{-4 }*10^{-5} m*m\\ 10.8225*10^{-4 -5}\;m^2\\ 1.08225*10^1*10^{-9}\;m^2\\ 1.08225*10^{-8}\;m^2\\ \)

Mmm, Not quite guest   

Remember that with order of operation you have to do powers before you multiply   :)

It is not (3rs)^4

it is 3rs^4  which means 3r(s^4)

it cannot be simplified.

It is not anything except an expression :)

10t^2+5t=5t^2+11t+8

\(10t^2+5t=5t^2+11t+8\\ 10t^2-5t^2+5t-11t-8=0\\ 5t^2-6t-8=0\\ \)

Now you could use the quadratic formula but I am going to factorise it.

I need 2 numbers that multiply to give 5*-8=-40   and add to give -6

-10 and +4 work

change -6t into  -10t+4t

\(5t^2-10t+4t-8=0\\ 5t(t-2)+4(t-2)=0\\ (5t+4)(t-2)=0\\ 5t+4=0 \qquad or \qquad t-2=0\\ 5t=-4 \qquad or \qquad t=2\\ t=-\frac{4}{5} \qquad or \qquad t=2\\ \)

Jen bought a dozen 18 liters of soy sauce. He used 80 bottles to hold the sauce. In liters and milliliters, calculate the average volume of each bottle of soy sauce.

You want litres per bottle so it is just       18/80 = 0.225 Litres = 225 mL

你想升每瓶所以它只是18/80=0.225升=225毫升

Thanks Dragonlance :)

I have reported the problem.  Hopefully you will be back on line very shortly :/

Hi Heureka,

That is no good at all!     

I will send a not to Admin for you :)

Hopefully we will have you back on  the forum very soon :)

Melody

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