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Jet001 [13]
3 years ago
9

Find the recursive formula for 18, 15, 12, 9, . .

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
5 0

Answer: a_{n}=a_{n-1}-3  ,  n\geq 2

Step-by-step explanation:

a_{1} = 18

The common difference = -3

Therefore :

a_{n}=a_{n-1}-3  ,  n\geq 2

check:

when n = 2

a_{2}= a_{1}-3

a_{2}=18-3 = 15

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Step-by-step explanation:

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2 years ago
Y=-2x+2<br> y = 7x +11<br> Solve systems by substitution
Agata [3.3K]

Answer: (-1,4)

Step-by-step explanation:

y=-2x+2                                    y=7x+11 <----- substitute this equation for y in the            

                                                                       equation y=-2x+2

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