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3 years ago

If the third term in a geometric sequence is 20, and the fifth term in the sequence is 5, what is the ratio (multiplier)?

Mathematics

1 answer:

Talja [164]3 years ago

5 0

Term:    3    4      5
Value 20    ..      5
          20 20r 20r^2
So 20r^2 = 5
         r^2 = 1/4
           r = 1/2

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4 years ago

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Gnoma [55]

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Option B is correct answer.

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Since in question we 2x instead of x so, replacing x with 2x and Putting values:

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3 years ago

Read 2 more answers

Suppose that a teacher agrees to pay a student 10¢for every problem in this chapter that the student solves correctly, and fin

Andreas93 [3]

Answer: 10

Step-by-step explanation:

Let x be the number of correct problems and y be the number of incorrect problems.

Given: A teacher pays a student 10¢ for every problem in this chapter that the student solves correctly, and fines the student 5 ¢ for every problem done incorrectly.

At the end of 30 problems they do not owe each other any money.

The by considering the given information we have the following equations :-

$x+y=30-----(1)\\\\ 10x-5y=0------(2)$

From (2), we have

$5y=10x\\\\\Rightarrow\ y=2x$

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Then, $y=2(10)=20$

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3 years ago