A drop in temperature means the temperature will decrease. That decrease is represented by a negative integer, which should be added to the previous temperature.

yes

Step-by-step explanation:

Mathematically speaking, a drop in the magintude of a physical quantity is denoted by an negative sign. A negative sign means that there has been a decrease on the physical quantity of a parameter being measured. For example, the decrease in the temperature of a mountain top given as 10 degrees decrease can be given as:

ΔT = - 10 °C.

Similarly, the decrease in the velocity of the object can be given as:

Δv = - 10 m/s which is deceleration.