Question

find ab and ca. ab = ca =

Explanation:

Step1: Calculate AB

To find the distance between two points A and B on a number - line, we subtract the coordinate of A from the coordinate of B. Here, the coordinate of A is - 13 and the coordinate of B is - 6.8. So, $AB=-6.8-(-13)=-6.8 + 13 = 6.2$.

Step2: Calculate CA

To find the distance between two points C and A on a number - line, we subtract the coordinate of C from the coordinate of A. The coordinate of C is 19.9 and the coordinate of A is - 13. So, $CA=-13 - 19.9=-32.9$. The absolute value of CA gives the distance, so $|CA| = 32.9$.

Answer:

$AB = 6.2$, $CA=32.9$