2 years ago

Find 3 numbers in a geometrical sequence if:

Mathematics

1 answer:

wolverine [178]2 years ago

4 0

a1+a2+a3=21

(a1=1,a2=3,a3=7)

a1xa2xa3=64

(a1=2,a2=4,a3=8)

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Answer: Option B.

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Step-by-step explanation:

If a varies directly with b then when a increases b it also increases by a factor k.

Then we can write that

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Therefore the equation of proportionality is:

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So when $a=5$ then:

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Mademuasel [1]

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