Martin can run 1 mile in 7 minutes. What valid proportions can be written from this information? Check all that apply. 1 3
--- = ---
7 21

1 3
--- = ---
21 7

7 21
--- = ---
1 3

1 21
--- = ---
7 3

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

: )

( - 4 , -7 )

all the lines must parallel  

step-by-step explanation:

coordinates of c = ( - 1 , 2 )

3 units left = ( -4 , 2 )

9 units down = ( - 4 , 11 )

he answer is x=1x3 because x=1 to x=3