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vekshin1
3 years ago
5

find a formula for the nth term of the arithmetic sequence the first term is -2 and the common difference is 8

Mathematics
1 answer:
Rudiy273 years ago
3 0

Answer:

a(n) = -2 + 8(n - 1)

Step-by-step explanation:

General formula is a(n) = a(1) + d(n - 1), where d is the common difference.

Here a(n) = -2 + 8(n - 1)

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Solve1 over 25 = 5^x ^+ 4. <br> x = -7/2<br> x = −6 <br> x = 9/2 <br> x = 2
Basile [38]
The equation seems to be

   1
-------- = 5 ^ (x + 4)
  25

In that case, this is the solution, stept by step:

1) factor 25: 25 = 5^2

          1
=> ----------- = 5^(x + 4)
         5^2

2) invert 5^2

=> 5^(-2) = 5^(x+4)

3) Given that the bases are equal, the exponents also have to be equal:

=> - 2 = x + 4

3) transpose +4:

=> - 2 - 4 = x

=> x = - 6

Answer: - 6
6 0
3 years ago
How do you solve the equation 2.25t + 5 = 13.5t +14
Lynna [10]
2.25t+ 5= 13.5t+ 14
⇒ 5- 14= 13.5t- 2.25t
⇒ -9= 11.25t
⇒ -9/11.25= t
⇒ -0.8= t

Final answer: t= -0.8~
6 0
3 years ago
Read 2 more answers
~please help, thank you~
solong [7]
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subsitute
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6 0
3 years ago
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1/9,1/3,5/9 find the rule
anastassius [24]
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3 0
3 years ago
I neeed help it’s a word problem
katrin [286]

Answer:

12.50

Step-by-step explanation:

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5 0
3 years ago
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