Question

HELP ME WALLAHI HELP HELP PLS

Answer 1

Answer:

15

Step-by-step explanation:

Answer 2

Answer:

b=1.5*10^1

Step-by-step explanation:

a^2+b^2=c^2

a=20

b=?

c=25

a=4*10^2

c=6.25*10^2

a-c=2.25*10^2

b^2=2.25*10^2

take the square root if it requires it.

b=1.5*10^1