16. Determine if the following statements are always, sometimes, or never true

a. When adding two negative rational numbers, the sum will be negative,

b. When adding two rational numbers with different signs, the sum will
be zero.

c. When adding two positive rational numbers, the sum will be zero.

d. When adding two rational numbers with different signs, the sum will
be negative,

Plz help

Jonah runs 3/5 miles on sunday and 7/10 mile on monday. he uses the model to find that he can ran a total of 1 mile . what mistake does jonah make

Can someone me with this problem . show your work .

Someone answer asap for ! the boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a. e = 2b - 212 b. b = 2e - 212 c. e = -2b + 212 d. b = -2e + 212