For the 2nd equation, you need solve for y to get it by itself so once thats done you get y=9x+27 but since the x values (also the slope) aren't equal, they can't be parallel
Compute the derivative of 
at 
- this will be the tangent vector - then normalize it by dividing it by its magnitude to get the unit tangent vector 
.
Answer:
Ca^(2+) or the charge is 2 plus or just 2
Step-by-step explanation:
Charge on the calcium ion = 20*(+1) + 18*(-1) = 20 - 18 = 2
The charge on the calcium ion is +2
Answer:
use this app photomath
Step-by-step explanation:
You can take a photo and its gives you the answer and the explanation
