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iren2701 [21]
3 years ago
10

A school found that the number of students buying lunch from the cafeteria had declined. The school wants to revise its current

lunch menu.
They asked parents and students to suggest new meals.
Which method of selecting new meals will produce an unbiased result?
Mathematics
1 answer:
11111nata11111 [884]3 years ago
7 0

all the suggested meals will be shuffled into one stack and every 10th suggestion will be used

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Evaluate <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7By%7D%20%20for%20x%20%3D%20%20%5Cfrac%7B2%7D%7B3%7D%20and%20y%20%3D%2
Whitepunk [10]
    
 \displaystyle\\&#10;\frac{x}{y} ~~~ \Big( \texttt{ for } x =  \frac{2}{3} \texttt{ and }  y = \frac{6}{7} \Big)= ?\\  \\  \\ &#10;\Longrightarrow~~~\frac{x}{y}= \frac{~\frac{2}{3} ~}{\frac{6}{7} }= \frac{2}{3} \cdot \frac{7}{6} =\frac{2\cdot 7}{3\cdot6 }= \frac{7}{3\cdot 3 }= \boxed{\frac{7}{9}} \\  \\  \\ &#10;\texttt{Correct ansver: A}



4 0
3 years ago
What is 5 cm in mm. i need a simple answer. NO LINKS
Setler [38]

50 millimeters

keystrokes

4 0
3 years ago
Read 2 more answers
Which two statements contradict each other?
kifflom [539]
II(RS is a median) and III(RS is a side of RST)
4 0
3 years ago
Write greatest unit fractions that are repeating decimals. Then express each fraction as a decimal.
LekaFEV [45]
Our repeating decimal would be= 0.5555….
Let’s give 0.5555….. repeating decimal a variable of x:
x= 0.5555…. or 0.5(move 1 point to the right)
So ,10x = 5.5555 or 5.5

Now, Let’s do subtraction:
10x = 5.5555… or 5.5  
<u>-   x =  0.5555… or 0.5</u>
 9x  = 5.0            or 5.0

To get a fraction, provide a denominator the same with the numerator of variable x which is 9. Then divide the difference:
<span><u>9x</u> = <u>5.0</u>  
9        9</span> <span> <span><span> <span> <span>Therefore, x = <u>5
</u>                                     9</span> </span> </span> </span></span>


7 0
3 years ago
In a list of five consecutive odd integers, the sum of the first and double the last is 139. What is the largest sum?
Leviafan [203]

Answer: 49

Step-by-step explanation:

From your question, I think you mean the largest number. The answer is given below.

Let the five consecutive odd numbers be:

a, a+2, a+4, a+6 and a+8.

Thee sum of the first and double the last is 139. This can be written as:

a + 2(a+8) = 139

a + 2a + 16 = 139

3a + 16 = 139

3a = 139 - 16

3a = 123

a = 123/3

a = 41

The first number = 41

The largest number = a+8 = 41 + 8 = 49.

7 0
3 years ago
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