For the following arithmetic sequence, find the value of ( a ) and ( r ) and hence find the term indicated: - 2 , - 6 , - 18 , . . . , t5. If the first term of a geometric sequence is 3 and the 4th term is 81, what is the value of r.

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where r the answers

step-by-step explanation:

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          √25                                         √33               √36      

i made this little number line up there for a visual example. : d

to find √33, you take the nearest root vales you know right off the bat. √25 and √36 which is 5 and 6, correct? and on the number line, you can see that √33 falls closer to √36, 6. so we know that √33 is going to be 5 point. something, right? but because 33 is so close to six, it is going to be a higher number for 5 point. something. so it is approximately 5.7