The data set represents the number or errors on a typing test. What is the mean? [5,6,8,8,9,9,10,10,10,12]

assuming you mean addition: addition and subtraction are reverse operations.

step-by-step explanation:

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

: )

1. perpendicular

2. parallel

3. perpendicular