I think the answer would be be C.
Because even though 'a' and 'b' are rational, and their squares are
also rational, that doesn't guarantee that the sum of their squares
has a rational square root.
Examples:
1 and 2
Sum of squares = 5
√5 is irrational
2 and 3
Sum of squares = 13
√13 is irrational
4 and 5
Sum of squares is 41
√41 is irrational
'c' is rational only when 'a', 'b', and 'c' form a . . . . . wait for it . . . . .
a 'Pythagorean triple'.
Examples:
3 and 4
Sum of squares is 25
√25 = 5 is rational yay
5 and 12
Sum of squares is 169
√169 = 13 is rational yay
The answer is -12*20=-240 and add to 8. -12+20=8
Subtract 1000 by 12. Divide that answer by 2. Add 12 to that answer.
Equations:
1000 -12= 988 988÷2=494 494+12=506
506 boys and 494 girls competed at the special olympics event.
