Answer:
C. cot theta
Step-by-step explanation:
(csc theta -cot theta )/(sec theta -1)
csc = 1/ sin 
cot = cos / sin
sec = 1 / cos
Let x = theta
(1/ sin x -cos x / sin x )/(1/ cos x -1)
Getting a common denominator in the denominator and combining terms
(1- cos x)/ sinx  / ( 1 - cos x) / cos x
(1- cosx)      (1- cosx)
----------- ÷ ------------
 sinx            cos x
Copy dot flip
(1- cosx)       cosx
----------- * ------------
 sinx            1 -cos x
Cancel like terms
cos x / sin x
cos / sin = cot
cot x
cot theta
 
        
             
        
        
        
There are 25 students in relay race and there are 5 equal teams, to find the number of team in relay, we can use division:
25÷5
=5
Therefore, a team have 5 sudent.
Hope it helps!
 
        
             
        
        
        
Ok, to solve this, once again you need to fold this map back up into a 3d shape ( in your head).
What you should see is that the little overhanging sides that had no measurement, now have a measurement. They measure up to be the same as the 3m. sides.
so to find the area of all the rectangles, you need to multiply the base times height. (b)h
I will start from the left of your pic. and work my way to the right...not including the little overhanging ones.
The first one should measure out to be 3(15) =45 
The second to be 6(15) =90
The third to be 3(15) =45
The fourth to be 6(15) =90   :)
So you have these, but now you need to get the little over hangers I call them...lol.
The width is 6, same as the rectangle they are attached to. And the picture in your mind should tell you that the height is 3, the same as the width of the skinny rectangles that they attach to in your mind.
Soooo now they measure out to be 3(6) =18. and you just multiply this by two because they are the same area, right? So that would be 36. 
ok. Now add all of the areas of the surfaces 45+90+45+90+36 to get a total surface area of.... *drummel please*   306m^2  
this means 306m. to the power of 2 if you didn't know.
well, I hope you understand better and I hope I helped! ;)
        
                    
             
        
        
        
Answer:
288 cubic feet 
Step-by-step explanation:
6x6= 36 that is for one base now multiply by 8 and get 288
 
        
             
        
        
        
For thsi you need to think of 2 simulatneous equations=
16f + 28s= 24232
f + s = 1090
We need to find a way to subtract one equation from the other so you can multiply the bottom by 16
so you would get
16f + 28s = 24232
16f + 16s = 17440
Now you can subtract the second one from the bottom one to get
12s= 6792
s= 566
So there were 566 tickets sold on staurday so to find fridasy you can do 1090 -566, which is 524
so on friday night 524 were sold and on saturday there was 566 sold