Thanks Alan :)
There is no working out - not really - it is just addition.
The minus signs belong to the number that follows it and they are all just added together.
-5+8-7-13+2+9
=3-7-13+2+9
=-4-13+2+9
=-17+2+9
=-15+9
=-6
OR you could look at how to put the numbers together so that it is a little easier.
=-5+19-20
=-5-1
There are some great online calculators for this. Look in our Sticky Topics. There is one called "Reference Material" There are lots of calcs to choose from in there.
There are a number of ways
T_n means T subscript n
Tn I wrote this by writing Tn and then high lighting the n and and then choosing subscript from the drop down format menu. After you do this though it will stay in subscript format until you substript again and that will cancel it out. It is kind of weird.
I would do it using the LaTex Formula button. I would put T_n in the input box and then press ok.
This is the output.
$$T_n$$
there were 5000 beads in a container. out of 25 beads, 113 were gold and 12 were silver.which is the best estimate of the total number of gold beads in the container
Your question makes no sense.
There is no division so there cannot be a remainder.
Hi 315,
Consider the right angled triangle ABX Where BX is the vertical line.
<ABX = 90- alpha
<ABX+ <XBH= 90
so angle XBH = alpha
The angle that you are questioning is vertically opposite this angle so it is also alpha.
Yes that helps - thanks Alan.
So the downward force at B is 1.6kN
the inward horizonal force at B is 1.2kN
I guess it is the same at D
There is the downward force at G of 1.5kN
How does all this get put together to answer the rest of the questions?
So long as y is not equal to zero then the answer is 1
I think of a number and multiply it 1000 times by 4. The answer is the same as if I had started with twice the original number and multiplied it by 2 how many times?
$$\\x*4^{1000}=(2x)*2^y\\\\ x*2^{2000}=2x*2^y\\\\ x*2^{2000}=x*2^{y+1}\\\\ y=1999$$
+118723 
