What is the recursive rule for this geometric sequence? 7, 21, 63, 189, …

a. a1=7; an=3⋅an−1

b. a1=7; an=13⋅an−1

c. a1=21; an=7⋅an−1

d. a1=3; an=7⋅an−1

ppplllease

The monetary value earned for selling goods or services to customers is called a.) revenue b.) assets c.) money d.) accounting

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

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.