How many blue counters must be added so that the ratio of yellow counters to total counters is 1 to 6
2 answers:
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Answer:
A. 7
Step-by-step explanation:
you bring down the 1 and multiply it by -2 then -2 goes to add with 2, which makes it 0. Then 0 x -2 is 0. 0 then goes to add with -3, then -3 comes down. -2 x -3 is 6. 6+1 is 7.
In this exercise we have to use the knowledge of geometric progression to find three specific numbers, in this way we can say that these numbers correspond to;
Then using the formula of the geometric progression we find that:
now, the differences between the terms must be the same:
and now, when we increase the third term by 9,so we have:
Now we use that identity in the first equation :
The general solution for a quadratic equation is
We have that:
- a = 25
- b = -104
- c = 16
so, put the numbers in the formula we find:
See more about geometric progress at brainly.com/question/14320920