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3 years ago

An=−5n+90 i dont know it

1 answer:

3 0

I am guessing your problem should read...

A) n = -5n + 90 (isolate the variables by adding 5n to each side)
   +5n +5n
   6n = 90 (since we don't want to know what 6n's are worth, divide by 6)
6n/6 = 90/6
   n = 15

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In a poll, 37% of the people polled answered yes to the question "Are you in favor of the death penalty for a person convicte

Nimfa-mama [501]

Answer:

2239

Step-by-step explanation:

Given-

Percent of peopl polling yes to the question "Are you in favor of the death penalty for a person convicted of murder?" $= 37$ %

Margin error in the poll $= 2$ %

Confidence Interval $= 95$ %

The alpha value is $1 -0.95 =0.05$

The $z_\frac{\alpha }{2}$ for Confidence Interval of $95$ % $= 0.196$

The sample size is given by

$n = p*q*(\frac{z}{e} )^2$

Where,

$p = \frac{37}{100} = 0.37 q = 100-0.37 = 0.63 e =2/100 = 0.02 z = 1.96 (critical value)n = p*q*(\frac{z}{e} )^2 = 0.37 * 0.63(\frac{1.96}{0.02} )^2 \\n = 2238.69\\n= 2239$

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3 years ago

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Fittoniya [83]

Answer:

Step-by-step explanation:

all you have to do is * 7 by 5 and divide by 2

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3 years ago

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Which is the correct graph of y=2/x^2-4 ?

Elis [28]

The correct graph would be the first one

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3 years ago

Find a closed form for Sn = 1 *1!+2*2!+...+n*n! for integer n>=1 Your response should have a factorial.

pantera1 [17]

Hello,

$x_{1} =1*1!=1\\
 x_{2} =2*2!=4\\
 x_{3} =3*3!=18\\
 x_{4} =4*4!=96\\

 S_{1} = x_{1}=1=2!-1\\
 S_{2} = x_{1}+x_{2}=1+4=5=3!-1\\
 S_{3} = x_{1}+x_{2}+x_{3}=5+18=23=4!-1\\
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 \boxed{S_{n} = (n+1)!-1}\\


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4 years ago

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il63 [147K]

Answer: b

Step-by-step explanation: because five hunderedths is bigger than nine hundredthe which is not equal

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3 years ago