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scoundrel [369]

3 years ago

9

A person participates in a weekly office pool in which he has one chance in ten of winning the prize. If he participates for 5 w

eeks in succession, what is the probability of winning at least one prize.

1 answer:

Molodets [167]3 years ago

5 0

Answer: 2

Step-by-step explanation:

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Solve the given system, using the substitution method.<br><br> y = 3x – 4<br> 9x – 3y = 14

bulgar [2K]

$y=3x-4 \\
9x-3y=14 \\ \\
\hbox{substitute 3x-4 for y in the 2nd equation:} \\
9x-3(3x-4)=14 \\
9x-9x+12=14 \\
12=14 \\
not \ true \\ \\
\boxed{\hbox{no solution}}$

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If (-3)^-5 =1/x, what is the value of x?

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$\bf \left.\qquad \qquad \right.\textit{negative exponents}\\\\
a^{-{ n}} \implies \cfrac{1}{a^{ n}}
\qquad \qquad
\cfrac{1}{a^{ n}}\implies a^{-{ n}}
\qquad \qquad 
a^{{{ n}}}\implies \cfrac{1}{a^{-{{ n}}}}\\\\
-------------------------------\\\\
%(-3)^-5 =1/x,
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\\\\\\
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