3 years ago

Simplify the expression (-7)2.

Mathematics

2 answers:

torisob [31]3 years ago

3 0

Answer: -14

Step-by-step explanation:

Softa [21]3 years ago

3 0

Answer:

Step-by-step explanation:

(-7)2

-7 • 2

-14

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Pn=1/3pn-1 and p4=108 , then p6= ? please show steps

Natali5045456 [20]

$p_n=\dfrac13p_{n-1}$
$\implies p_n=\dfrac13\left(\dfrac13p_{n-2}\right)=\dfrac1{3^2}p_{n-2}$
$\implies p_n=\dfrac13\left(\dfrac13p_{n-3}\right)=\dfrac1{3^3}p_{n-3}$

and so on, up to

$p_n=\dfrac1{3^{n-4}}p_4=\dfrac{108}{3^{n-4}}$

which means

$p_6=\dfrac{108}{3^{6-4}}=\dfrac{108}9=12$