Answer:

Step-by-step explanation:
To add fractions <em>with the same denominator</em>, simply add the numerators:

So:

5^2 +12^2= diagonal^2
25+144=d^2
169= d^2
D= 13
Answer:
71.70
Step-by-step explanation:
Answer:
weak negative
Step-by-step explanation:
because its in negative and its in the thousands place.