Answer:
2.79
Step-by-step explanation:
Given
With reference angle 21°
hypotenuse (h) = 3
base (b) = x
Now
cos 21° = b / h
0.93 = x / 3
x = 0.93 * 3
x = 2.79
Hope it will help :)
Answer:
I can't explain here since I can't write numbers.
Step-by-step explanation:
I think it is the first one: Different bar widths.
Answer:

Step-by-step explanation:

Open up the parentheses

-7x cancels out on both sides

-12 cancels out on both sides

I hope this helps!