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KatRina [158]
3 years ago
10

If 5,x,y,40 are in geometrical progression, find x and y respectively.

Mathematics
1 answer:
Andrei [34K]3 years ago
5 0

Answer:

x = 10, y = 20

Step-by-step explanation:

Because this is a geometric sequence, we'll call the rate of change z. Because 40 is 3 terms away from 5, we can write 5 * z * z * z = 5z³ = 40.

z³ = 8 → z = 2

Now, we simply multiply 5 by 2 to get x, which is 10, and then we multiply x by 2 to get 10 * 2 = 20 for y. Hope this helps!

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Vlad [161]
Correct Answer:
3rd option is the correct answer

Solution:
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The y-intercept of the polynomial is -18. This means the polynomial passes through the point (0,-18). Therefore, y must be -18 when x = 0. Using these values of x and y in previous equation we get:

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3 years ago
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Nadya [2.5K]

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Answer:

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option 2

6 0
3 years ago
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22' is 22 minutes
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Answer:

Step-by-step explanation:

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Answer:

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