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Class Opener:. For the given sequence: 3,12,48,192… find the indicated term: 5 th term 2. 14 th term 3. n th term Find for a geometric sequence with the given terms. Geometric Mean.

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Class opener

Class Opener:

For the given sequence: 3,12,48,192… find the indicated term:

  • 5th term 2. 14th term 3. nth term

    Find for a geometric sequence with the given terms.


Geometric mean

Geometric Mean

  • You can find the geometric mean of any two positive numbers by taking the positive square root of the product of the two numbers.


Find the geometric m ean

Find the Geometric Mean

  • 20,____,80

  • 28,_____,5103


Work groups

Work Groups:

Need Help: Pg. 217 – 221

Kind of Understand: Pg. 521

I Got This: Pg. 522 and Word Problems Page


Word problem practice

Word Problem Practice:

  • Split into groups of 2

  • Work together to solve the word problems passed out from yesterday.


Exit slip

Exit Slip:

Suppose a balloon is filled with 5000 of helium. It then loses one fourth of its helium each day.

  • Write the geometric sequence that shows the amount of helium in the balloon at the start of each day for five days.

  • What is the common ratio of the sequence?

  • How much helium will be left in the balloon at the start of the tenth day.


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