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3 years ago

Dakota tiled a floor with tiles that look like this:

Mathematics

1 answer:

Sliva [168]3 years ago

3 0

AB=8 in.
AC=6 in.
BC=10 in.
<ABC=37
<CAB=90
<ACB=53
<BCE=2*37=74
<CED=2*53=106
l=6*AB=6*8=48 in.
w=6*AC=6*6=36 in.

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baherus [9]

Principal is the same as original amount.
1. You convert the rate % to a decimal number. (divide by 100) 

2. Substitute: 

P = 144 / (.04 x 2) 

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3 years ago

From a group of 3 men and 4 women, a delegation of 2 is selected. What is the expected number of men in the delegation?

Ostrovityanka [42]

Answer:

The expected number of men in the delegation is 0.86.

Step-by-step explanation:

Number of men = 3

Number of women = 4

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$P(X=1)=\dfrac{^3C_1\times ^4C_1}{^7C_2}=\dfrac{4}{7}$

$P(X=2)=\dfrac{^3C_2\times ^4C_0}{^7C_2}=\dfrac{1}{7}$

The expected number of men in the delegation is

$E(x)=0\times P(X=0)+1\times P(X=1)+2\times P(X=2)$

$E(x)=0\times \dfrac{2}{7}+1\times \dfrac{4}{7}+2\times \dfrac{1}{7}$

$E(x)=\dfrac{6}{7}$

$E(x)\approx 0.86$

Therefore, the expected number of men in the delegation is 0.86.

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3 years ago

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scoray [572]

Answer:

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Step-by-step explanation:

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