Speeding: on a stretch of interstate-89, car speed is a normally distributed variable with a mean of 69.1 mph and a standard deviation of 3.3 mph. you are traveling at 73 mph. approximately what percentage of cars are traveling faster than you? enter your answer as a percentage with 1 decimal place.

11.9%

Step-by-step explanation:

Given :  On a stretch of Interstate-89, car speed is a normally distributed variable with mph and mph.

Let x be a random variable that represents the car speed.

Since ,

z-score corresponds x = 73 ,

Required probability :

[using z-value table.]

Hence, the approximate percentage of cars are traveling faster than you = 11.9%

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!