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BlackZzzverrR [31]
4 years ago
8

If r = - square root 2 and a5 = 32 square root 2 what is the first term of the sequence?

Mathematics
2 answers:
mash [69]4 years ago
7 0

Answer:

8sqrt2

Step-by-step explanation:

IrinaK [193]4 years ago
3 0
A1=8 because we are using the sequence formula for a geometric sequence

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Is 5359 divisible by 4
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1339.75

Step-by-step explanation:

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How much must you deposit in an account to earn $400 per year at 2% simple interest?
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Step-by-step explanation:

Simple interest is a method to calculate the amount of interest charged on a sum at a given rate and for a given period of time.

...

Simple Interest Example:

Simple Interest

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3 Year S.I = (1000 ×5 × 3)/100 = 150

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3 years ago
1,-2,3,-4,5... <br><br> what’s the next two numbers in the pattern?
MrMuchimi

Answer:

The two numbers following 1,-2,3,-4,5...  are -6 and 7.

Step-by-step explanation:

index:   1   2   3   4   5 ....

value:    1  -2  3  -4   5

Let the index be n.  Then the first term is a(1), the secon is a(2), and so on.

a(2) = 2*(-1)^(2-1) = 2*(-1) = -2 (correct)

a(3) = 3*(-1)^(3-1)   =  3*(-1)^2 = 3 (correct)

a(4) = 4*(-1)^(4-1)    = 4*(-1)^3 = -4 (correct)

So the general formula for a(n)  is:    a(n)=n(-1)^(n-1)

Thus,

a(5) = 5(-1)^4 = 5

a(6) = 6(-1)^5 = -6

a(7) = 7(-1)^6 = 7

The "next two numbers in the pattern" are -6 and 7.  The first 7 numbers are

1,-2,3,-4,5, -6, 7

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Step-by-step explanation:

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