Answer:
C. 13 inches
Step-by-step explanation:
using pythagorean theorem
a^2 + b^2 =c^2 where a and b are the legs and c is the hypotenuse
5^2 + 12^2 = c^2
25+144 =c^2
169 = c^2
take the square root of each side
sqrt(169) = sqrt(c^2)
13 = c
It would come out as a fraction :) Hope this helped
169
x = - -------
761


Cancel out the denominators.
(x+5)² + 18 = -30
(x+5)² = -30 - 18
(x+5)² = -48
The equation is impossible, we have a negative number.
There isn't a number that squared gives a negative number (the square is always positive).
√(x+5)² = +/- √-48
x+5 = +/- √-48
IMPOSSIBLE
You can write the result in imaginary numbers
x+5=+/- 4i√3
M ∠ BOA = 360° - 250° = 110°
The sum of all interior angles of the quadrilateral AOBC is 360°
m ∠ BCA = 360° - ( 110° + 90° + 90° ) = 360° - 290° = 70°
Answer: C ) 70°