2x +3x = 180
5x = 180
x = 36
To find the reciprocal, you just flip the fraction upside down, so it would be D
Well, to find the answer to this problem you have to change the -15 to a positive (+15) and add the two numbers together. And, 15 + 68 = +83 degrees.
So, your answer is: A. +83 degrees.
It's really easy because all your doing is changing the -15 to a positive 15 and adding the two numbers together to get your answer.
Hope I helped!
- Debbie
Answer:

Step-by-step explanation:
Given:
The magnitude, v=12
The angle
it makes with the positive x-axis =
Now for a vector (x,y)
; and
Therefore:


Similarly:


Recall that:

Therefore: 
The vector in the form ai+bj is therefore:

Hi I am here to help :). I think the answer would be 7/4. Good luck!