A. 2.3 + (-2.3) is equal to zero

B. (-3.7) + (-4.1) is positive

C. - 2.6 - (-12/4) is positive

D. (5/2) + (-2.5) is negative

E. 72 - (-100) is negative

A. True

B. False

C. True

D. False

E. False.

Step-by-step explanation:

A. 2.3 + ( - 2.3) is equal to zero, which is true because 2.3 - 2.3 = 0

B. ( - 3.7) + ( - 4.1) is positive, which is false because - 3.7 - 4.1 = - 7.8

C. - 2.6 - ( - 12/4) is positive, which is true as - 2.6 - ( - 3) = 0.4

D. (5/2) + (-2.5) is negative, which is false as (2.5) + ( - 2.5) = 0

E. 72 - (-100) is negative, which is again false as 72 - ( - 100) = 72 + 100 = 172. (Answer)