Answer:
16
Step-by-step explanation:
We have the expression:
b^2
We know that b= -4. Therefore, we can substitute -4 in for b.
(-4)^2
-4^2 is the same as multiplying 4, 2 times.
-4^2
=-4*-4
2 negative numbers multiplied together make a positive number.
= 16
Let b= -4
the answer is 2.7777
You just divide!
Q2. angle 5 +angle 6=90°
angle 5+ 6°=90°
angle 5=90°-6°
angle 5=84°
Q.3 angle 8+angle 9=90°
angle 8 + 11°=90°
angle 8=90°-11°
angle 8=79°
