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Serhud [2]
3 years ago
8

For a set of data, r = 0.27. Which is true about the correlation of the variables? The variables have no correlation. The variab

les have a strong positive correlation. The variables have a weak negative correlation. The variables have a weak positive correlation.
Mathematics
2 answers:
VLD [36.1K]3 years ago
5 0
Answer: The variables have a weak positive correlation

Since r > 0, the correlation is positive. It's a weak correlation because r is closer to 0 than it is to 1.

Mariana [72]3 years ago
3 0
The variables have a weak positive correlation is what i put.
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A jar contains 4 red and 8 blue marbles a marble is drawn from the jar what is the probability that a red marble is drawn ?
frosja888 [35]

There is a 1/3 chance that a red marble would be chosen.

To find out you put add up the marbles, so they will make 12 marbles.

Since there are 4 red you put 4/12.

4/12 simplified is 1/3.

So the chance of a red marble being picked is 1/3.

5 0
3 years ago
the sum of three numbers is twenty. the second number is four times the first and the sum of the first and third is eight. what
8090 [49]
Let's call the three numbers x, y, and z. 


The numbers are 3, 12, and 5.
x + y + z = 20
y = 4x
x + z = 8
We can rewrite the first equation because y is 4x, so 
x + 4x + z = 20
5x + z = 20
And now we can use simultaneous equation rules to solve

5x + z = 20
x + z = 8

5x + z = 20
5x + 5z = 40
(subtract)
-4z + -20
÷ -4
z = 5

x + z = 8
x + 5 = 8
x = 3

y = 4x
y = 4 × 3
y = 12

I hope this helps!
4 0
3 years ago
SOLVE THIS QUESTION WITH FULL STEPS...THANKS
GalinKa [24]

Answer: which question

Step-by-step explanation:

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Alla [95]
The vertex point is (0,4)
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