Answer:
i think its -The given point is 0.8 units above the line of best fit
Step-by-step explanation:
only because if it were -0.8 it would be below the line
Parallel lines have no solution
Answer:

And we can use the probability mass function and we got:
Then the probability that all three have a smart phone is 0.091
Step-by-step explanation:
Let X the random variable of interest "number of students with smartphone", on this case we now that:
The probability mass function for the Binomial distribution is given as:
Where (nCx) means combinatory and it's given by this formula:
And we want to find this probability:

And we can use the probability mass function and we got:
Then the probability that all three have a smart phone is 0.091
1. Multiply 36/10*10/10 because the denominator needs to be 100 (because %= 100)
example: 36/10*10/10=360/100
2. now you have your answer :D
Hope this helps!
It is D segment addition postulate