1. Solar radiation arrives at the top of the atmosphere at a rate of 84k) per minute per square metre (84k]/min. m2). On average only 47% of this energy reaches ground level. Calculate
the amount of energy in kl reaching 2m2 at ground level over the period of 10800 seconds.

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