Should be the fourth answer.
C. the values can be added after making a conversion of units because they both measure length.
Are you looking for the value of x?
We can complete the square/factor:
x^2+7x-30=0
(x+10)(x-3)=0
By the zero product property rule, we have two equations, x+10=0 and x-3=0.
So the zeroes of x are -10 and 3
Hope this helped. Comment below if this didn't make sense.
180-130=50
180-96=84
angles in a triangle add up to 180
50+84=134
180-134=46
x=46 degrees
15.8 I believe. Since 20 isn’t a option 15 is the closest. Good luck I have good faith I have you the right answer