The sum of the first three terms of an arithmetic sequence is 30 while their product is 840. Determine these terms. ​

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)

1.) 21

2.) 0.453

3.) 1.5

4.) 48

5.) $ 22

step-by-step explanation:

his answer is incorrect. i just used it, and it said it was incorrect. the answer is 0.