Answer:

Step-by-step explanation:
Let the third side of the triangle be
.
We can apply the cosine rule to find
.

We evaluate to obtain;



We take the positive square root of both sides to obtain;

The correct answer is B.
We could write such a number as



so we're done.
Answer:
y=1.40x+8
Step-by-step explanation:
26=1.40x+8
18=1.40x
12=x
Answer:
b
Step-by-step explanation: