Objectives Quiz: Geometric Series 6:Sequences and Series 4. Use the formula to evaluate the series 2 – 10 + 50 – 250 + a 6 Sn = a1(1 - ) 1-r In the formula for a finite series, 2. is the first term, r is the common ratio, and n is the number of terms. 15,624 -5208 5208​

Evaluate cos2θ for cosθ = square root of 3/2

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

Determine the standard form of the equation of the line that passes through (-2,0) and (8,-5)