Answer:
Drone = $300
4 Extra Set Of Propellor = 4(25$) = $100
Step-by-step explanation:
 
        
             
        
        
        
Answer:
B
Step-by-step explanation:
So remember that a quarter of a circle is 90 degrees, a half of a circle is 180 degrees, and a whole circle is 360 degrees.
Looking at the image shown, it must be half a circle, whihc is 180 degrees. The image tells us that the 1st angle is 7 degrees. Now, we must find the 2nd angle.
Heres what we know however:
angle 1 + angle 2 = 180 degrees.
How do we know this? 
Well, there are only 2 angles in this 180 degrees. We know that the first one is 7 degrees. 
Lets input that into our nice lil equation to get an answer:
7 degrees+angle 2 = 180 degrees
Now lets solve.
Subtract 7 on both sides, and your left with:
angle 2 = 173 degrees.
So the answer must be:
<u>173 degrees</u>
Hope this helps! ;)
 
        
             
        
        
        
(2p + 7)(3p-9)
2p x 3p= 6p^2
2p x -9= -18p
7 x 3p=21p
7 x -9=-63
6p^2 - 18p + 21p - 63
6p^2 + 3p -63 is the answer.
 
        
        
        
Answer:
x=1 or x=16
Step-by-step explanation:
3/4x = 12      or        0.75x = 12 
3/4x/3/4 = 12/3/4     or     0.75x/0.75 = 12/0.75
x=12/1 / 3/4
x= 4/4
x = 1                           or       x = 16