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nexus9112 [7]
3 years ago
7

Tell whether the valuation is a solution of the inequality r + 4 > 8 ; r = 2

Mathematics
1 answer:
aleksandr82 [10.1K]3 years ago
3 0

Answer:

Not a solution.

Step-by-step explanation:

Step 1: Write inequality

r + 4 > 8

Step 2: Solve for <em>r</em>

  1. Subtract 4 on both sides: r > 4

Step 3: Determine

r = 2

2 > 4 = FALSE

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If a1=2 and an=2an-1 find the first 5 sequences
Murljashka [212]

Answer:

The first 5 terms of the sequence are 2, 4, 8, 16 and 32.

Step-by-step explanation:

Given:

a_{1} = 2

a_{n} = 2a_{n-1}   -----------------(i)

To get the first 5 terms of the sequence, substitute in turn, n = 1, 2, 3, 4, 5 into equation (i).

The first term (when n = 1) has been given as:

a_{1} = 2

The second term (when n = 2) is given as:

a_{2} = 2a_{2-1}

a_{2} = 2a_{1}    (but a_{1} = 2 )

=> a_{2} = 2(2)

=> a_{2} = 4

The third term (when n = 3) is given as:

a_{3} = 2a_{3-1}

a_{3} = 2a_{2}    (but a_{2} = 4 )

=> a_{3} = 2(4)

=> a_{3} = 8

The fourth term (when n = 4) is given as:

a_{4} = 2a_{4-1}

a_{4} = 2a_{3}   (but a_{3} = 8 )

=> a_{4} = 2(8)

=> a_{4} = 16

The fifth term (when n = 5) is given as:

a_{5} = 2a_{5-1}

a_{5} = 2a_{4}   (but a_{4} = 16 )

=> a_{5} = 2(16)

=> a_{5} = 32

Therefore, the first 5 terms of the sequence are 2, 4, 8, 16 and 32.

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3 years ago
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Answer:

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Step-by-step explanation:

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