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Find the common ratio of the geometric sequence 
-11,33,-99,dots
Answer:

Find the common ratio of the geometric sequence 11,33,99, -11,33,-99, \ldots \newlineAnswer:

Full solution

Q. Find the common ratio of the geometric sequence 11,33,99, -11,33,-99, \ldots \newlineAnswer:
  1. Divide Terms: To find the common ratio of a geometric sequence, we divide any term by the previous term.\newlineLet's divide the second term by the first term: 33÷(11)33 \div (-11).
  2. Calculate Division: Calculating the division: 33÷(11)=333 \div (-11) = -3. This gives us the common ratio of the sequence.
  3. Check Consistency: To ensure that 3-3 is indeed the common ratio, we should check if dividing the third term by the second term also gives us 3-3. Let's calculate: (99)÷33(-99) \div 33.
  4. Check Consistency: To ensure that 3-3 is indeed the common ratio, we should check if dividing the third term by the second term also gives us 3-3. Let's calculate: (99)÷33(-99) \div 33. Calculating the division: (99)÷33=3(-99) \div 33 = -3. This confirms that the common ratio is consistent across these terms.

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