What's the recursive formula of the geometric sequence below? 2, 6, 18, 54, 162, 486, ...

a1 = 2; an = an–1 ∙ (3)n–1 for n ≥ 1

a1 = 2; an = an–1 ∙ (3) for n ≥ 2

a1 = 3; an = an–1 ∙ (2)n–1 for n ≥ 2

a1 = 2; an = an–1 ∙ (2) for n ≥ 1

a reflection across the x-axis , followed by the by a reflection across the y-axis , and then a scale dilation of 0.5 .

m∠a is 90°

m∠b is 40°

she will sew have sewn five dresses   and be 1/3 done with the sixth one in an hour.

step-by-step explanation:

3/4 of an hour=45 mins

lucy makes 1 dress per 11.25 minutes

45 mins+11.25 mins=56.25 mins

60 mins- 56.25 mins=3.75 mins

3.75 mins is 1/3 of of 11.25 mins

therefore she the other 1/3 would be part of the hour and she will have sewn 5 dresses and begun the sixth.

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should have been evaluated with one odd value and one even value. the expressions have equivalent values when . when , the first expression has a value of 3 and the second

step-by-step explanation: