2points
if b = the number of blue bikes, which algebraic expression represents the
phrase below?
the sum of the number of blue bikes and the 9 red bikes

B+9

Step-by-step explanation:

If your trying to find the sum of both you would just add them together.

Hope it helps

here the number -5 is all of the following except a rational number.

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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