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OLga [1]
3 years ago
10

Is 0.21 smaller or bigger than a half?

Mathematics
2 answers:
irina1246 [14]3 years ago
6 0
Smaller because one-half is .5 or .50, but .21 is less than .50.
Savatey [412]3 years ago
3 0
Smaller, since a half equals to 0.50
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The geometric sequence a i a i ​ a, start subscript, i, end subscript is defined by the formula: a 1 = 8 a 1 ​ =8a, start subscr
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Question:

The geometric sequence ai is defined by the formula: a₁ = 8, aᵢ = aᵢ₋₁(-1.5 ).

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Step-by-step explanation:

Given

Geometric Sequence

a₁ = 8

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First, the common ratio needs to be calculated.

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In other words,

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We can calculate the common ratio from aᵢ = aᵢ₋₁(-1.5 ) by dividing both sides by aᵢ₋₁. This gives

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So, the common ratio, r = -1.5

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By substituting these values; we get

S₂₀ = 8(1 - (-1.5)²⁰)/(1 - (-1.5))

S₂₀ = 8(1 - (-1.5)²⁰)/(1 + 1.5))

S₂₀ = 8(1 - (-1.5)²⁰)/(1 + 1.5))

S₂₀ = 8(1 - (3325.25673008

))/(2.5)

S₂₀ = 8(1 - 3325.25673008

)/(2.5)

S₂₀ = 8(-3324.25673008

)/(2.5)

S₂₀ = -10,637.621536256

5 0
3 years ago
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Alenkinab [10]

Answer:

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