13
10
no 3 numbers add to equal 10 and multiply to equal 40.
39
7 & 3
-10 and -3
To find two numbers that multiply to -10 and add to -3, we can set up a system of equations. Let's call the two numbers x and y. We have the equations xy = -10 and x + y = -3. By solving this system, we can find that the two numbers are -5 and 2, as -5 * 2 = -10 and -5 + 2 = -3.
You can add the numbers 10, 10, 10, and 10 to get 40. Alternatively, you could use numbers like 5, 15, 10, and 10, or even 1, 2, 3, and 34. There are numerous combinations that can result in a sum of 40.
43
-23
-7
3
10