Question

Pls help me with all of them ill give 81 points

Answer 1

1. No

2. Yes

3.
`√(80)`

4. x=8

Explanation:

1.

6^2+8^2

=36+64=100

9^2=81

100≠81

No

2.

5^2+12^2

=25+144

=169

13^2=169

169=169

Yes

3.

x^2=4^2+8^2

x^2=16+64

x^2=80

x=
`√(80)`

4.

x^2+6^2=10^2

x^2+36=100

x^2=64

x=
`√(64)`=8