Answer:
A
Step-by-step explanation:
The sum of the interior angles of a polygon is
sum = 180° (n - 2) ← n is the number of sides
Here n = 6, thus
sum = 180° × 4 = 720°
Thus each interior angle = 720° ÷ 6 = 120° and therefore
3x = 120 ( divide both sides by 3 )
x = 40 → A
Answer:
x=12
Step-by-step explanation:
4+30+2x=x+22
Bring like terms to the one side,
34-22=x-2x
12=-x
flip the equation,
-x=12
x=-12
x=-12 is the final answer
Answer:
Let the consecutive numbers be x and x+1
given
(x+1)^2=19+9x
x^2+2x+1=19+9x
like terms together
x^2+2x-9x+1-19=0
x^2-7x-18=0
factorize the quadratic equation to get the value of x
(x-9)(x+2)=0
x=9 and x=-2
we reject the second option
the answer is x=9 and x=9+1=10
x=9 and x=10
Thank you!
Step-by-step explanation:
X1=2,X2=10. Hope that helped lovely
