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Viktor [21]
2 years ago
11

Students at a middle school are divided into 6th, 7th, and 8th grades. A random sample of 15 students from each grade is chosen.

Mathematics
1 answer:
Julli [10]2 years ago
4 0

Answer:

B. Stratified random sample is the correct answer

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Wittaler [7]

Answer:

5,-0.5 is the answer to the fist one

Step-by-step explanation:

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2 years ago
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tigry1 [53]

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4 0
3 years ago
Adding and subtracting mixed numbers with unlike denominators
Agata [3.3K]

Answer:

Step-by-step explanation: You need to find a the lowest number that the denominators can be timed by. In you're case. You can just times 5 by 2 = 10

So that both the denominators are 10. And the denominator that was once 5. The numerator of that fraction also needs to be timed by 2.

So then you have 7 18/10 - 6 15/10

Then you can convert them to to proper fractions 8 8/10 - 7 5/10

Then you can take away the fractions so it's

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7 0
3 years ago
Read 2 more answers
​​​​​​​PLEASE HELP :((((
sertanlavr [38]

88(3.7+4.3)-2*2.6

88(8)-2*2.6

704-2*2.6

704-5.2

698.8

I hope it helps!

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5 0
2 years ago
-2(-5x+5) - 3x + 4= -34 solve for x
geniusboy [140]

Answer:

x = -4

Step-by-step explanation:

-2(-5x+5) - 3x + 4= -34

10x - 10 -3x + 4 = -34

7x - 6 = -34

<u>     +6    + 6</u>

7x = -28

x = -4

4 0
2 years ago
Read 2 more answers
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