124
15 and 4 are the factors of 120 that add up to 19.
The factors that multiply to 120 and add up to -8 are -12 and 10. This is because when you multiply -12 and 10, you get -120, and when you add them together, you get -8. Thus, the pair of factors you are looking for is (-12, 10).
146
How about: 120+1.2 = 121.2
-1, 6 and -12.
-15+-8=-23 -15*-8=120
If something costs $120 plus 20%, you would add 20% of $120 to $120. To find out the cost, you would calculate 20% of $120, which is $24, and add it to $120 to get a total of $144.
No, 3 is a factor of both. Note that the digits of 120 add up to 3 and those of 147 add up to 12. Both are multiples of 3 so the numbers 120 s and 147 are divisible by 3 and not relatively prime
138
120 + 138
154
for a regular hexagon, all angles would add up to 720 or each one is 120. for an irregular hexagon all the angles still add up to 720 but not all the angles, if any, will be 120