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3 years ago

5

If pn= pn-1 +4 and p17=74, then p3=

1 answer:

Solnce55 [7]3 years ago

5 0

$p_n=p_{n-1}+4$
$\implies p_{17}=p_{16}+4$
$\implies p_{17}=p_{15}+2\cdot4$
$\implies p_{17}=p_{14}+3\cdot4$
$\implies p_{17}=\cdots=p_3+14\cdot4$

$\implies74=p_3+56\implies p_3=18$

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<u>Translations</u>

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Step-by-step explanation:

Let us solve the question

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→ By using the distributive property, take one over five as a common factor

from both terms

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→ Simplify the bracket

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