2 years ago

X/14=40/70 Solve the proportion for x.

1 answer:

3 0

Answer:

Step-by-step explanation:

$\frac{x}{14} = \frac{40}{70} \\ x = \frac{40}{70} \times 14 \\ x = \frac{40}{10} \times 2 \\ x = 4 \times 2 \\ x = 8$

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skad [1K]

A formula is recursive if it expresses the term $a_n$ in terms of the previous one(s) $a_{n-1},\ a_{n-2},\ \ldots,\ a_1$

In this case, every term is 7 more than the previous one, so the formula for $a_n$ will only involve $a_{n-1}$ :

$a_n = a_{n-1} + 7$

In fact, this formula is simply saying: for every index $n$ , the term with that index is 7 more than the term before.

Also, we have to specify the starting point (otherwise we would go backwards indefinitely), so the complete recursive formula is

$a_n = a_{n-1} + 7,\quad a_1 = 2$

which means: start with 2 and generate every other term by adding 7 to the previous one.

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Marina CMI [18]

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Inessa05 [86]

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2 years ago

BlackZzzverrR [31]

This might help explain how to do a very similar problem.... http://www.mathopenref.com/constbisectline.html

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NISA [10]

132 children + 61 children = 193 children

Unless some of the children who went on Sunday also went on saturday.

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