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gayaneshka [121]
3 years ago
15

Which of these is not a possible r-value?

Mathematics
1 answer:
Y_Kistochka [10]3 years ago
7 0

Answer:

a. 1.75

Step-by-step explanation:

r values, or the correlation coefficient  must be between -1 and 1, inclusive

-1 is a perfect negative correlation

0 is no correlation

+1 is a perfect positive correlation

1.75 is not between -1 and 1

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D. 225

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Jerald jumped from a bungee tower. If the equation that models his height, in feet, is h = –16t2 + 729, where t is the time in s
Snezhnost [94]

Answer. First option: t > 6.25


Solution:

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-16t^2+729-729 < 104-729

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Multiplying the inequality by -1:

(-1)(-16t^2 < -625)

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Dividing both sides of the inequality by 16:

16t^2/16 > 625/16

t^2 > 39.0625

Replacing t^2 by [ Absolute value (t) ]^2:

[ Absolute value (t) ]^2 > 39.0625

Square root both sides of the inequality:

sqrt { [ Absolute value (t) ]^2 } > sqrt (39.0625)

Absolute value (t) > 6.25

t < -6.25 or t > 6.25, but t can not be negative, then the solution is:

t > 6.25



5 0
3 years ago
Read 2 more answers
Can someone pleasw helppppppp meee
Sergio [31]
It would be 2,5, and 6. The mode means the number that is repeating the most. Since 2, 5, and 6 all appear 3 times, that is the mode
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2 years ago
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Need help with this math question <br>will give 5 stars and mark best<br>​
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I used similarities in triangles

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2 years ago
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