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Vilka [71]
3 years ago
13

2kg of coconut juice, which costs $5/kg, were combined with 8kg of coconut milk, which costs $3/kg. Find the cost per kg of the

mixture.
Mathematics
1 answer:
katen-ka-za [31]3 years ago
4 0
Cost per kg=(total cost)/(total kg)


total cost
coconut juice: 2kg, at $5/kg, so 5*2=$10
coconut milk: 8kg, at $3/kb, so 8*3=$24

total cost=10+24=$34

total kg=2+8=10

cost per kg=$34/10kg=$3.40per kg
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<u>The correct question is:</u> The playing time X of jazz CDs has the normal distribution with mean 52 and standard deviation 7; N(52, 7).

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Let X = <u>playing time of jazz CDs</u>

SO, X ~ Normal(\mu=52, \sigma^{2} =7)

The z-score probability distribution for the normal distribution is given by;

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Now, according to the 68-95-99.7 rule, it is stated that;

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