Answer:
91
Step-by-step explanation:
We know that, the sum of the exterior angles of a polygon is 360 i.e., (x+3) + (2x+1) +(3x-1) = 360 i.e., x+2x+3x+3+1-4 = 360 i.e., 6x = 360 Therefore, x = 60 Now, x+3 = 60+3 =63 2x+1 = 2*60 +1 =120 + 1 = 121 3x-4 = 3*60 - 4 = 180 - 4 = 176 The exterior angles are 63, 121 and 176
Answer:
x = -19
Step-by-step explanation:
-10x - 19 = 19 - 8x
-10x + 8x = 19 + 19
-2x = 38
x = -19
The vertex will be (1 , 2)
So, we start by solving what the numbers are..
2x10^5 = 200000 IN 2010!
Now this is where you might get confused, that WAS 2.5 times the number IN 1985
So you divide 200,000 by 2.5 = 80,000
Therefore its C.
That is the pH scale
pH = - log of the concentration of hydrogen ions in a solution.