2 years ago

PLEASE HELPO 25 POINTS

Mathematics

1 answer:

Grace [21]2 years ago

6 0

Answer:

an = 1/2 (n) (n+1)

Step-by-step explanation:

1,3,6,10,.........

3-1=2

6-3=3

Each term is different so there is no common difference. It is not an arithmetic sequence

3/1=3

6/3 =2

Each term is different so there is no common ratio. It is not a geometric sequence

1 3 6 10

+2 +3 +4

a1 = 1

a2 = 3

a3 = 6 = 2*3

a4 = 10 = 2*5

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Answer:

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Step-by-step explanation:

5x+9-3x=21

5x-3x=21-9

2x=12

x=6

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Factor out the coefficient of the variable 1/3b-1/3

Darya [45]

The variable is b, the coefinet is 1/3

remember
ab-ac=a(b-c)
1/3b-1/3=1/3(b-1)
there, factored

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3 years ago

What is vaule of f^-1 (-4)

Butoxors [25]

Answer:

-4/f

Step-by-step explanation:

i hope this helps

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2 years ago