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Brut [27]
3 years ago
14

A convenience store company would like to know what flavor slushy children ages 8 through 11 prefer. The company decides to ask

students in grades 3 through 5th at Lincoln Elementary School. Identify which group is the population and which is the sample.
1) _______________ Students in grade 3-5 at Lincoln High
2) _______________ Children ages 8 through 11
Mathematics
2 answers:
tatyana61 [14]3 years ago
3 0
1. Population
2. Sample
Y_Kistochka [10]3 years ago
3 0
Hello!

1) Sample

The students in the elementary school are just a sample or example of what children 8-11 think like. The thing is, not every single kid is just like the kids at Lincoln. This sample is just to find the basics. Testing the entire population (which would be impossible) would provide the most accurate result, but as that is a very difficult thing to do people use samples, similar to a ratio.

2) Population

The population is the WHOLE of all the children ages 8-11. The kids at Lincoln are just a sample of this. The population is every child who is 8-11, and this cannot be tested very easily.

I hope this helps!
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The variable z is directly proportional to x. When x is 11, z has the value 44. What is the value of z when x = 21?
dimulka [17.4K]

Directly proportional, both increase/decrease, Multiple k(constant you needed to solve for)..

Inversely --one increases as the other decreases, increase the denominator & fraction gets smaller.... So

Problem:

Dirextly to X (× by X)

Inversely to Y, (÷ by Y)

Z= k X/Y

Solve, working backwards: Z =5 becomes

5 = k (X) ÷ (Y). And

X=15 and Y =9 becomes

5= k(15)/(9). Undo ÷9, ×9 both sides

45= k(15). Now undo ×15 by ÷15 both sides

45/15 = 3. So k=3, (also called your constant of variation)....and your Equation/Proportion becomes...

Z = 3X/Y

Use the new #s.... X=23, Y=14

Z= 3×23÷14 = 69/14. If they want spirochete answer divide and round to corresponding # if decimals

4 0
2 years ago
Let a = 2i + 3, b= i – 1, and c= -3i + 2. Which expression is equivalent to a -b- c?A. –2i +4B. 4i + 2C. 4i + 4D. -2i + 2
34kurt

Given:

\begin{gathered} a=2i+3 \\ b=i-1 \\ c=-3i+2 \end{gathered}

You know that:

a-b-c=(2i+3)-(i-1)-(-3i+2)

In order to solve the operation, you can follow these steps:

1. Distribute the negative signs. Remember the Sign Rules for Multiplication:

\begin{gathered} +\cdot+=+ \\ -\cdot-=+ \\ +\cdot-=- \\ -\cdot+=- \end{gathered}

Then:

=2i+3-i+1+3i-2

2. Combine the like terms (add the Real Parts and add the Imaginary Parts):

=4i+2

Hence, the answer is: Option B.

3 0
1 year ago
A friend of yours was interested in determining whether the news media noticed campus events. Your friend decided to do a conten
anygoal [31]

The inference is that the person will tell the friend that he did manifest coding and he should have recorded the base.

<h3>What is an inference?</h3>

The options are:

He did manifest coding.

He did latent coding.

He should have recorded the base.

He did manifest coding and he should have recorded the base.

It should be noted that an inference simply means the conclusion that can be deduced based on the information given.

In this case, the friend was interested in determining whether the news media noticed campus events and decided to do a content analysis of the local paper.

Therefore, the the person will tell the friend that he did manifest coding and he should have recorded the base.

Learn more about inference on:

brainly.com/question/25280941

#SPJ12

8 0
1 year ago
Read 2 more answers
A certain drug is made from only two ingredients: compound A and compound B. There are 4 millimeters of compound A used for ever
dolphi86 [110]
858 i believe... 
546/7
78 x 4 (compound a)
312 + original compound b (546)

Hope I helped!
Giving me brainliest is much appreciated! =)
4 0
2 years ago
Plz help I will thank u and mark u as branilyest
IceJOKER [234]

 number 9 =al you have to do is one and 7 eighths =9 so your sum will be 10 and 7 eighths.

hope this helps;)

MARK ME BRAINLIEST

YOU PROMISED!

8 0
2 years ago
Read 2 more answers
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