The number f of miles a ship is from its destination x hours after starting a voyage is given by f(x) = 80-20x. The number f of
1 answer:
The ship traveled <u>80 miles</u> in <u>4 hours</u> while the submarine traveled <u>75 miles</u> in <u>5 hours</u>.
<h3>How to determine the distance and time traveled?</h3>Based on the information provided, we can logically deduce that the ship is initially 80 miles away from its destination. Thus, f(x) would be equal to 0, if it traveled 80 miles and 0 miles away from its destination:
f(x) = 80 - 20x
0 = 80 - 20x
20x = 80
x = 80/20
x = 4 hours.
By critically observing the graph (see attachment) for the submarine's voyage, we can logically deduce the following:
- Distance = 75 miles.
- Time = 5 hours.
Read more on graphs here: brainly.com/question/13511914
#SPJ1
You might be interested in
Answer:
a) P(75 < x < 80 ) = 0.2088
b) The probability that average height of all humans less than 65
P( X < 65 ) = 0.0495
Step-by-step explanation:
<u><em>Step(i)</em></u>:-
Given mean of the Population = 72
Given variance of the Population = 18 inches.
Standard deviation of the Population = √18 = 4.242
Let 'x' be the random variable in Normal distribution
a)
Given X₁ = 75
Given X₂= 80
The probability that average height of all humans between 75 and 80
= | A ( 1.885) - A( 0.70721|
= 0.4699 - 0.2611
= 0.2088
P(75 < x < 80 ) = 0.2088
b)
<u><em>Step(ii)</em></u>:-
Given X₁ = 65
The probability that average height of all humans less than 65
P( X < 65 ) = P( Z < - 1.650 )
= 1 - P( Z > 1.650)
= 1 - ( 0.5 + A (1.650))
= 0.5 - A( 1.65)
= 0.5 - 0.4505
= 0.0495
The probability that average height of all humans less than 65
P( X < 65 ) = 0.0495