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Talja [164]
3 years ago
11

Write the equation of the arithmetic and geometricsequences given 15, 5, ...

Mathematics
1 answer:
ivann1987 [24]3 years ago
7 0

Step-by-step explanation:

Arithmetic:

a(n) = a +(n-1)d

a=15

d=5-15=-10

°.° a(n) = 15 +(n–1)-10

Geometric​:

a(n)=a*r^(n-1)

a=15

r=5/15=1/3

a(n)=15*(1/3)^(n-1)

hope this helps

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What’s the answer to 15=2y-5
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15=2y-5

move -5 to the other side

sign changes from -5 to +5

15+5= 2y-5+5

15+5= 2y

20= 2y

divide both sides by 2

20/2= 2y/2

y= 10

Answer : y= 10

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Mandarinka [93]

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4 years ago
Kirti bookstore sold books worth Rs.285891 in the first week of june and books worth Rs.400768 in the second week of the month .
Wewaii [24]

Answer: A)Sale for two weeks =Rs. 686,659.  b)\Kriti books had greater sales in the second week than the first by Rs.114877

Step-by-step explanation:

Price of books sold in the first week=Rs.285891

Price of books sold in the second  week=Rs.400768

Total Amount of books sold in the two weeks=Rs.285891 +Rs.400768 =

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Fro the question, we can see that Kriti books store has more sales in the second week.

Which is greater than in the first week by Rs.114877

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Answer:

A,c,e

Step-by-step explanation:

3 0
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