Melody

[2nd][asin]

inverse sine is the same as arc sin

13/15 that is assuming that you do draw one item :)

That is not correct Mellie    

(-5,-6), m=-3

y=mx+b

y=-3x+b

sub in (-5,-6) ti find b

-6=-3*-5+b

-6=-15+b

9=b

y=-3x+9

Hi Mellie,

The question is a bit ambiguous so

I am going to assume that the train will arrive on the minute somtime between 1:01 and 1:59 inclusive

Well the train will be there for 10 minutes and alex could arrive anytime in 60 minutes so that would be 1/6

This logic has at least one obvious hole in it. The train could arrive arrive between 1:51 and 1:59 in which case it will not be at the station for a full 10 minutes during the hour.    

idk - needs more thought   

You do this with integration by parts 

f(x)=lnx                    g'(x)=3

f'(x)=1/x                   g(x)=3x

$$\\\boxed{\int\;f(x)g'(x)dx=f(x)g(x)-\int\;g(x)f'(x)dx}\\\\\\\\
\int\;((lnx)*3)dx\\\\
=(lnx)(3x)-\int\;(3x*\frac{1}{x})dx\\\\
=(3xlnx)-\int\;(3)dx\\\\
=(3xlnx)-3x+c\\\\
=3x(ln(x)-1)+c$$

315, try comprehending my last post.   

We all agree but we have to work with the forum that we have been given :)

Sorry guys - this is out of my hands :)

Yes there are approx 2.2 pounds in a kilogram

K=2.2P

there is your formula :)

Click on the formulary page that is in the ribbon above :)