Answer:
The proportion of cars can get through the toll booth in less than 3 minutes is 67%.
Step-by-step explanation:
Let the random variable <em>X</em> be defined as the service times at a tool booth.
The random variable <em>X</em> follows an Exponential distribution with parameter <em>μ</em> = 2.7 minutes.
The probability density function of <em>X</em> is:
Compute the probability that a car can get through the toll booth in less than 3 minutes as follows:
Thus, the proportion of cars can get through the toll booth in less than 3 minutes is 67%.
Answer:
45
Step-by-step explanation:
kari had 15 miles 5x3=15
sondra had 60 miles 15x4=60
40-15=45
Answer:36
Step-by-step explanation:
I actually just answered this problem on a website the answer is 36.
Answer:
75 cm
Step-by-step explanation:
To find the area of a traingle you use the following equation
b*h*.5
We know that the height of the triange is three times the base and that the area is 937.5
This means that
b*3b*.5=937.5
We can combine this and get 1.5b^2=937.5
We can then divide by 1.5 to get b by itself
b^2=625
Then take the square root for our answer and get b=25 (while be also can be -25 it doesn't make sense to have a negative answer in the context of this problem)
So we know that b=25 and that h=3b which means that the height is 75 cm