An internet reaction time test asks subjects to click their mouse button as soon as a lightflashes on the screen. The light is programmed to go on at a random time from 2 to 5 seconds after the subject clicks “start.” Below is a density curve for the time at which the
light goes on.
(b) Find the proportion of times that the light goes on between 2.5 and 4 seconds after the
subject clicks "start."

Hi my sisters and brothers can tell me the answer because i don’t understand the question

Evaluate 5 + 6 · 2 – 8 ÷ 4 + 7 using the correct order of operations. a. 22 b. 11 c. 27 d. 5

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem