A person "race walking" can walk 20 kilometers in 100 minutes. What is their speed in miles per hour (1 km = 0.621371)

7.46 mph

Step-by-step explanation:

S = 20 × 60/100 = 1200/100 = 12 km/h

12×0.621371 ≈ 7.46 mph

50x5=$250

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

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