Answer:
9 in.?
Step-by-step explanation:
pythagoras theorem
if jl is the hypotenuse you do the square root of 10² - 5²
9/56 is already in its simplest form. You CANNOT make it more reduced than this
Answer:
8587 should be in the box
Step-by-step explanation:
we would see it question as: 12/- 8587
12 goes into 85 7 times, so 7
12 goes into 18 1 time, so 1
12 goes into 67 5 times, so 5
then the remainder is 7
or you further divide to get . 5 8 3333333...
so your answer should be 715r7 or 715.58333
Answer:
4
Step-by-step explanation:
The exponential distribution is:

where

The probability we want is how likely will a dvd player last more than 8 years, given it has already lasted 5 years
To find this, you use conditional probability.

where A is P(x>8) and B is P(x>5)
To find these probabilities, integrate over the distribution:

Sub into conditional probability formula:

Final Answer: Given a dvd player is more than 5 years old, the probability that it will last another 3 more years is about 54.9%