A² = b² + c² - 2bc cosA
a² = 10² + 14² - 2*10*14 cos54
a² = 100 + 196 - 280 * cos54
a =
a = 11.46
B
Explanation: I guessed and it was right
Let's assume you have supplement angle

Now when you talk about multiplication you can simply say...

And that will give you the answer.
Answer: 2
(
x
+
4
)
Step-by-step explanation: