-20 and -9 among an infinite number of others.
The two numbers that multiply to -72 and add to -29 are approximately 3.57 and -32.57.
-29
They are: 29+31 = 58
The two numbers that multiply to 29 and add to 1 are 5 and -4. This is because (5 \times -4 = -20) and (5 + (-4) = 1). However, if you mean to find two numbers that strictly multiply to 29 and add to 1, there are no such real numbers, as the solutions to the equation (x^2 - x - 29 = 0) yield non-integer results.
29
51 + 29 = 80
They are: 29+31 = 60
29+31 = 60
-29
There are no prime numbers greater than 10 that add up to 29. Since all prime numbers greater than 2 are odd numbers, no two prime numbers greater than 2 can have an even number for their sum.
29
No, they are not. You can add two composite numbers, 15 and 14 for example, and get a sum, 29, that is prime.