-12
Working together, +10 and -2 can do that.
The factor pairs of 30 are (30,1)(15,2)(10,3)(6,5) None of them add up to 20.
multiplied to seventy and add to nine is impossible, but add up to 9 and multiplied to -70, or add up to -9 and multiplied to 70 are possible. In that case, 14 and -5 would do it (or -14 and 5)
2 and 252 multiplied together equals 504. I wouldn't say that they "multiplied add up to", however, because it could be confusing whether you are talking about multiplication or addition.
The correct answer is 5 + sqrt(5) and 5 - sqrt(5) which are approx equal to 2.763932 and 7.236068
6 and -2
-16 and 9
-134
28 x 10
-377
The interior angles add up to (20-2)*180 = 18*180 = 3240 degrees.The interior angles add up to (20-2)*180 = 18*180 = 3240 degrees.The interior angles add up to (20-2)*180 = 18*180 = 3240 degrees.The interior angles add up to (20-2)*180 = 18*180 = 3240 degrees.
The factor pairs of 12 are (12, 1) (6, 2) (4, 3) None of them add up to 5.
20 + 19 = 39The two consecutive numbers that add up to 39 are 19 and 20.