Maybe you mean 9:30pm (night) to 6:45am (morning)
9:30 till midnight is 2 hours and 30minutes
midnight till 6:45 is 6 hours and 45 minutes
30 minutes +45 minutes = 30+30+15 = 1 hour 15 minutes
2hour+6hours +1hour+15minutes = 9 hours and 15 minutes
1.5/100*60
there will be an infinite number of solutions
you need 2 equations for solve for 2 unknowns
subtract 5 and add 13 to both sides
then divide both sides by 3
always look under the bed. That is where most people can find everything.
wouldn't it be easier just to [press the button on you calc rather than ask here?
use the site calc on the home page
3x^2+2x+1=0
lets look at the discriminate in the quadratic formula
$$\triangle =b^2-4ac\\\\ \triangle =2^2-4*3*1\\\\ \triangle =4-12\\\\ \triangle =-8\\\\$$
In the full formula you have to take the sqrt of this and you cannot take the sqrt of a negative number.
Therefore this has no solutions (it has imaginary ones but you probably don't need to worry about those. )
square metres is an area and metres is a length.
you can not compare them,
however 1 square metre could be a squre with side lenght 1 metre
little c means centi which means 100 time smaller
eg
there are 100cm in 1m
+118730 
