T(n) is the total number of lights in a triangular lighting rig of n rows, as shown. which polynomial function represents t(n + 1)?
t(n)=1/2n^2+1/2n

a. t(n+1)=1/2n^2+3/2n+1
b. t(n+1)=1/2n^2+1/2n+1
c. t(n+1)=1/2n^2+n+1
d. t(n+1)=1/2n^2+1

Find the area of a parallelogram with base 15 yards and height 21 2/3

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

Se tiene en una caja de canicas 10, 4 blancas y 6 negras ¿cual es la probabilidad que en 2 extracciones con reemplazo sean blancas? ¿cual es la probalidad que en 2 extracciones sin reemplazo sean negras?