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vagabundo [1.1K]
3 years ago
15

What is 2 equivalent fractions to the fraction 4/7

Mathematics
1 answer:
ryzh [129]3 years ago
4 0
8 Over 14 And 12 over 21
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Step-by-step explanation:

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A sequence of numbers is formed by the iterative process Xn+1 = (Xn )2 – Xn
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Step-by-step explanation:

X1 = 1

X2 = (X1) 2 - X1

X2 = 2 - 1

X2 = 1. implies that the second term of the sequence is 1.

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What expression is equivalent to (10x)^-3
irakobra [83]

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1/ (1000x^3)

Step-by-step explanation:

yes

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Help me with this question if you could
Ainat [17]
I think it’s (x-1)(x-7)
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3 years ago
In which situation below would you want to use the Explicit Formula instead of the Recursive Formula?
Luden [163]

9514 1404 393

Answer:

  all of them, possibly excepting the 4th term

Step-by-step explanation:

The recursive formula is good if you have terms near the one of interest. It might be used for the 4th term, but that would require that you compute the three previous terms:

  7, 5, 3, 1 . . . . requires 3 subtractions

It can be about as easy to calculate ...

  a4 = 7 -2(3) = 1 . . . . requires two* subtractions and a multiplication

__

However, for the 7th, 11th, and 106th terms, it is impractical to list all previous terms. The explicit formula is a better choice.

A.  a4 = 7 -2(3) = 1

B.  a7 = -1 +10(6) = 59

C.  a106 = 2 +5(105) = 527

D.  a11 = -3 +4(10) = 37

_____

* The explicit formula is ...

  an = a1 +d(n -1)

The operations identified in this formula (in the order required by the Order of Operations) are subtraction, multiplication, and addition. For a negative common difference, that amounts to two subtractions and a multiplication.

For manual evaluation, the work involved in using the recursive or explicit formulas for the 4th term is about the same, if the arithmetic is easily done mentally (as here).

5 0
2 years ago
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