Answer:
9
Step-by-step explanation:
We can just count from -3 to -12 and get 9 as the distance
The paths will cross when the coordinates are (1,9) and (4, 15).
<h3>What is a model?</h3>
A model is a representation of reality. Now we have that the path of the frisbee is y = -x² + 7x + 3 while the path of the dog is y = 2x + 7.
The both paths will cross when;
-x² + 7x + 3 = 2x + 7
-x² + 5x - 4 =0
x=1 or x=4
If x = 1, y = 2(1) + 7 = 9
If x = 4, y = 2(4) + 7 = 15
Thus the paths will cross when the coordinates are (1,9) and (4, 15).
Learn more about a model:brainly.com/question/14281845
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Answer:
x = -72
Step-by-step explanation:
-72 + 8 = -64
The third square root of -64 is -4
Answer:
a)
b)
And adding the values we got:
Step-by-step explanation:
Previous concepts
The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".
Solution to the problem
Let X the random variable of interest "number of teens that have heard of a fax machine", 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:
Part a
For this case we want this probability:
Part b
For this case we want this probability:
And adding the values we got:
There are 100 centimeters in a meter, so just divide 238/100 = 2.38
The answer is 2.38
Hope this helped! If you have anymore questions or don't understand, please comment or DM me. :)