The sum of two numbers is 21. One of the numbers squared plus 1 is equal to the other number. Given that both numbers are positive, what are the two numbers?

4 and 17

Step-by-step explanation:

4 because 4^2 is 16 + 1 = 17 and the other # is 17 because 21-4 is 17

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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