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choli [55]
3 years ago
11

SOME ONE HELP PLEASE ILL MARK BRAINIEiST. AND I NEED TO KNOW THE PRICE OF ORANGES. WORTH A 100 POINTS> AND PLEASE DONT WASTE

MY POINTS PLEASE
Steve buys 2 lb of grapefruit and 3 lb of oranges for $7.20. Kennedy buys 4 lb of

grapefruit and 2 lb of oranges for $8.80. Let x represent the price per pound for

grapefruit, and let y represent the price per pound for oranges. Write a system of

equations to model the situation. What is the price per pound for oranges?
Mathematics
1 answer:
zepelin [54]3 years ago
6 0

Answer:

1.40 $ per pound.

Step-by-step explanation:

it is $1.40

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Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
A medical researcher wants to investigate the amount of time it takes for patients' headache pain to be relieved after taking a
Mariana [72]
<span>A medical researcher wants to investigate the amount of time it takes for patients' headache pain to be relieved after taking a new prescription painkiller. She plans to use statistical methods to estimate the mean of the population of relief times. She believes that the population is normally distributed with a standard deviation of 18 minutes. How large a sample should she take to estimate the mean time to within 4 minutes with 97% confidence?
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n = [z*s/E]^2
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</span>
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