Answer:
no mistakes
Step-by-step explanation:
There are no mistakes in the derivation of the quadratic formula by completing the square
Step 1
Move c to the right hand side
Step 2 Get x^2 to have a coefficient of 1
Step 3 complete the square by adding ( b/2a) ^2 to each side
Step 4 Write in the completed square form ( x+ b/2x) ^2 = -c/a + ( b/2a) ^2
Step 5 take the square root of each side, remembering the plus and minus
Step 6 subtract (b/2a) from each side
Total number of sides = n
Half, means n/2 of them have 150° each.
Half, means n/2 of them have 170° each.
Sum of angles in a polygon is given by the formula: (n -2)*180.
So summing the first of 150 degrees and the other half of 170 would be equal to the total of (n -2)*180.
(n/2)*150 + (n/2)*170 = (n -2)*180
(n/2)*(150 + 170) = (n -2)*180
(n/2)*(320) = (n -2)*180
160n = 180n - 360
160n - 180n = -360
-20n = -360
n = (-360) / (-20). Divide out
n = 18
So the polygon has 18 sides.
I hope this helps.
Regards.
Answer:
Dude we aren't in your class you need to write this one becuase we werent there AT ALL.
Step-by-step explanation:
Answer:
10 to the 17th power
Step-by-step explanation:
with 10s you just take the number of zeros behind the number and that equals the amount of powers you have. This method does not work with any other number besides 10!!
Hope this helped! And if it did Please mark me as brainliest