We can calculate a side of a triangle if the side's opposite angle, another side and its opposite angle are known using the Sine rule:
a/sin(A) = b/sin(B) = c/sin(C)
X = 8.5 because 8.5 x 2 = 17 and 17 + 1 = 18
Answer: are there any options
Step-by-step explanation:
-4 + -7= -11
When adding negative numbers if the are both negative then you add them. When you have a negative and a positive you subtract. In this problem they just took out the plus sign.