Final answer:
To solve for T in the equation 2t-5 = -10, add 5 to both sides to get 2t = -5, then divide both sides by 2, which gives T = -2.5. Therefore, the correct answer is T = -2.5, which is option (c).
Step-by-step explanation:
To solve for T in the equation 2t-5 = -10, you will first add 5 to both sides of the equation to isolate the term with the variable (T) on one side. This gives us:
2t = -5
Next, you'll divide both sides by 2 to solve for T:
T = -5 / 2
So, the solution is T = -2.5. Therefore, the correct answer is option (c) T = -2.5.