Answer:
Sorry this took so long, hope this helps
also the "a^2" is meant to mean this "
"
Explanation:
1) a^2+b^2=c^2
4^2+3^2=c^2
16+9=c^2
25=c^2
=c
5=c
2) a^2+b^2=c^2
15^2+8^2=c^2
225+64=c^2
289=c^2
=c
15=c
3)a^2+b^2=c^2
10^2+50^2=c^2
100+2500=c^2
2600=c^2
=c
50.99≈c
4) a=
a=
a=
a=
a=9