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Lady_Fox [76]
3 years ago
13

Write a recursive formula for the sequence –2, 4, –8, 16, ... please help and thank you

Mathematics
2 answers:
Alisiya [41]3 years ago
7 0

-2,4,-8,16,...

a₁ = -2

a₂ = -2a₁

a₃ = -2a₂

..................

=> aₙ₊₁ = -2•aₙ, with a₁ = -2

vaieri [72.5K]3 years ago
3 0

Answer:

see explanation

Step-by-step explanation:

A recursive formula allows us to calculate any term in the sequence from the previous term.

These are the terms of a geometric sequence with r being the common ratio between consecutive terms.

r = 4 ÷ - 2 = - 8 ÷ 4 = 16 ÷ - 8 = - 2

Multiplying a particular term by - 2 gives the next term in the sequence.

Hence recursive formula is

a_{n+1} = - 2 a_{n} with a₁ = - 2

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Answer:

C / 20

Step-by-step explanation:

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3 0
3 years ago
Assume that y varies directly with x. If y = -5 when
steposvetlana [31]

Answer:

Thus, the value of x = -36 when y = 15

Step-by-step explanation:

We know that if y varies directly with x, we can express the relationship such as

y ∝ x

y = kx

k = y/x

where 'k' is called constant of variation.

Given

y = -5

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Using the equation

k = y/x = -5/12

Thus, the value of k = -5/12

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y = 15

k = -5/12

substituting y = 15 and k = -5/12 in the equation

y = kx

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divding both sides by -5

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8 0
3 years ago
5 stars and a thank you
anzhelika [568]

Answer:

ok

Step-by-step explanation:

4 0
3 years ago
(0,4)<br> (3,-2)<br><br> The slope is m<br> and the y-intercept is b =
Rudiy27

Answer:

m = -2

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Step-by-step explanation:

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so y intercept is 4

y=-2x+4

5 0
3 years ago
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