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Original Question
find the common ratio in the sequence 8, 12, 18, 27, ..... then write the next three terms of the squenceQuestion
find the common ratio in the sequence 8, 12, 18, 27,..... then write the next three terms of the sequence
Answers
Ms. Sue
1/2 of 8 = 4
8 + 4 = 12
1/2 of 12 = 6
12 + 6 = 18
1/2 of 18 = 9
18 + 9 = 27
1/2 of 27 = 13.5
27 + 13.5 = 40.5
What do you think the next two numbers are?
8 + 4 = 12
1/2 of 12 = 6
12 + 6 = 18
1/2 of 18 = 9
18 + 9 = 27
1/2 of 27 = 13.5
27 + 13.5 = 40.5
What do you think the next two numbers are?
lavena
jeez i don't get it
Ms. Sue
I showed you how this sequence was figured.
What part of what I posted don't you understand?
What part of what I posted don't you understand?
lavena
1/2 of ...and how do u kno what number to put?
Ms. Sue
I took the first numbers in the sequence -- 8, 12, 18, and 27.
For the next number,
Take 1/2 of 40.5
Add that number to 40.5 to get the next number in the sequence.
For the next number,
Take 1/2 of 40.5
Add that number to 40.5 to get the next number in the sequence.
lavena
i got 10.125
Ms. Sue
Wrong. Doesn't half of 40 equal 20???
1/2 = 0.5
Use a calculator and multiply:
0.5 * 40.5
1/2 = 0.5
Use a calculator and multiply:
0.5 * 40.5
lavena
20.25?
Ms. Sue
Right. Half of 40.5 = 20.25
Add:
40.5 + 20.25 = ?
That will give you the sixth number of the sequence.
Add:
40.5 + 20.25 = ?
That will give you the sixth number of the sequence.
lavena
thx but need ur help anymore,... im such a pain..i'll do them on my own
lavena
thx but DON'T need ur help anymore,... im such a pain..i'll do them on my own