9514 1404 393
Answer:
B) positive
Step-by-step explanation:
For even-index roots, which may be either positive or negative, the <u> </u><u><em>positive</em></u><u> </u> root is called the principal root.
69, nice
118-49=69
Answer: 155°
because ∠a and ∠c are 2 opposing angles => m∠a = m∠c = 155°