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3 years ago

I need help solving number 1. could anyone go over the steps?

Mathematics

2 answers:

Ilia_Sergeevich [38]3 years ago

8 0

Well if the girl sold the same number of larges but one less small and she made $5 less, then you know that the small boxes are $5. From there take the equation 2s + 7L =52 and subtract 10 from 52 (the two small boxes equal 10) You're left over with 7L= 42 so then do 42/7 = $6 per big box

nexus9112 [7]3 years ago

6 0

So First of you'd make equations using what we know 3s+7L=57 2s+7L=52
so because these equations have only a difference of one small box this tells us that one small box is $5 so then using the second equation we can find the value of the large boxes 2(5)+7L=52 7L=42. 42/7=6 one large box is $6.

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Answer:

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galina1969 [7]

Answer:

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Step-by-step explanation:

We have to see if 50% = 0.5 is part of the confidence interval.

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

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<h3><u>Answer:</u></h3>

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