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gulaghasi [49]
3 years ago
7

mags wants to know what the hottest hairstyle Trend in is in our town what is the best group to survey of to find this informati

on

Mathematics
2 answers:
Butoxors [25]3 years ago
6 0

Answer:

The last option,

"Get a list of all the salons in her town and use a deck of cards to pick five of them to visit.  Survey all the hairstylists that work at each salon."

Step-by-step explanation:

When choosing a survey, we want to ensure not only that the survey is time-effective and cost-effective, but that it is representative of the entire population.

Just choosing the salons close to her house would not necessarily be a good representation of the entire town.

Choosing salons that celebrities go to creates bias in the survey as well, as does choosing only the salons she and her friends go to.

However, finding a list of all salons and using a deck of cards to represent it creates a random sample; this helps to eliminate bias and ensure the sample is representative.

kondor19780726 [428]3 years ago
6 0
You should choose the last option because it is the most random at choosing salons to ask and so will give the least biased answer.
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bazaltina [42]

Answer:

8 $10 notes

Step-by-step explanation:

I started by working it backwards. $93-$3 equals $90. So we have three of our 13 notes. We need ten more. Well the most $10 notes we can have is 8. if we had 8 $10 notes that would give us $80. $90-$80=10. We can take ten and divide it by five so we have 2 $5 notes.

So in total he would have 8 $10 notes, 2 $5 notes, and $3 one dollar notes which adds up to 13 notes

7 0
2 years ago
What is the difference between x and dx?
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This response is based upon your having had some background in calculus. "dx" is not introduced before that.

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Now, for a big jump: we consider finding the area under a curve (graph) between x = a and x = b. We subdivide that interval [a,b] into n vertical slices of area. Each of those slices has its own area: f(x)*dx, where dx represents the width of such subarea. f(x)*dx is the actual subarea. To find the total area under the curve f(x) between x= a and x = b, we add up all of these individual subareas between x = a and x = b. Note that the subinterval width is

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8 0
3 years ago
a buret is a tool designed to transfer precise amounts of liquid .A buret initially contains 70.00 millimeters of a solution and
katrin [286]

Let:

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Vbk= Volume of the beaker

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\begin{gathered} Vbu=70-ax \\ Vbk=20+ax \\ \text{where:} \\ a=0.05 \\ Vbu=70-0.05x \\ Vbk=20+0.05x \end{gathered}

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\begin{gathered} Vbu=Vbk \\ 70-0.05x=20+0.05x \\ \text{Solve for x:} \\ 0.1x=70-20 \\ 0.1x=50 \\ x=\frac{50}{0.1} \\ x=500 \end{gathered}

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Answer:

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