Answer:
x = 3 +√23 and x = 3 - √23
Step-by-step explanation:
The given equation 3x^2 -18x +5 = 47
This can be written as 3x^2 -18x + 5 - 47 =0
3x^2 -18x - 42 = 0
Here we have to use the quadratic formula.
x =
From the given equation, a = 3, b = -18 and c = -42
Plug in these values in the above formula, we get
x =
x =
Simplifying the above expression, we get
x = 3 +√23 and x = 3 - √23
Hope this will helpful.
Thank you.
Answer:
The measure of x is
Step-by-step explanation:
we know that
The formula to calculate the sum of the internal angles of a polygon is equal to
where
n is the number of sides
In this problem we have
substitute
Find the measure of each internal angle
Divide the sum of the internal angles by the number of sides
The value of x is half the measure of internal angle
so
Check the answer:
This answer is correct,
x = 119