Braking distance on a wet surface for the 2015 Toyota Camry is normally distributed with a mean of 149 ft. and a standard deviation of 5.28 ft. The braking distance on a wet surface for the Honda Accord is also normally distributed but with a mean of 138 ft. and standard deviation of 6.22 ft. If 25 randomly selected Camrys and 16 randomly selected Accords are selected (independently), what is the probability that the mean braking distance for the Camry is more than 10 ft. longer than the mean braking distance of the Accord

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.