What is it that I am supposed to be doing?
Hello there!
Evaluate a² for a = -4
The first step we need to do is replace a by -4
So we have (-4)²
Now what you have realize is that we need to multiply -4 by itself twice.
So it should looks like this:
-4 * -4
The rules says that when we have minus * minus, the answer is positive.
So we have -4 * -4 = 16
Answer: 16
I hope this helps!
Please let us know if you have other questions.
#Garebear
Divide by -8 (change inequality sign direction)
Response:
Greater it is equal to 62.50
Answer:
Y = 59.0°
Step-by-step explanation:
Using the cosine rule in terms of x, y and z
cosY = 
with x = 22, y = 20 and z = 18
cosY = 
= 
= 
, thus
Y = 
( ) ≈ 59.0° ( to the nearest tenth )
