Answer: the speed of the submarine is 5miles per hour
Step-by-step explanation:
The submarine left Hawaii two hours before the aircraft carrier.
Let x = the speed of the submarine
The aircraft carrier traveled at 25 mph for nine hours.
After this time the vessels were 280 miles apart. This means that when they became 280 miles apart, the aircraft carrier has travelled for 9 hours. If the submarine was ahead of the aircraft carrier with 2 hours, that means that the submarine travelled 9 + 2 = 11 hours
Distance travelled = speed × time
Distance travelled by submarine will be 11 × x = 11x miles per hour
Distance travelled by aircraft carrier will be 25 × 9 = 225 miles per hour
If they are 280 miles apart, this would be their total distance. Therefore,
225 + 11x = 280
11x = 280 - 225 = 55
x = 55/11 = 5miles per hour
Answer:
![x=60\degree](https://tex.z-dn.net/?f=x%3D60%5Cdegree)
Step-by-step explanation:
Consecutive angles of a parallelogram are are supplementay.
![\implies \: x + 2x = 180 \degree \\ \\ \implies \: 3x = 180 \degree \\ \\ \implies \: x = \frac{ 180 \degree }{3} \\ \\ \implies \: x =60 \degree](https://tex.z-dn.net/?f=%20%5Cimplies%20%5C%3A%20x%20%20%2B%202x%20%20%3D%20180%20%5Cdegree%20%5C%5C%20%20%5C%5C%20%5Cimplies%20%5C%3A%203x%20%20%3D%20180%20%5Cdegree%20%5C%5C%20%20%5C%5C%20%5Cimplies%20%5C%3A%20x%20%20%3D%20%5Cfrac%7B%20180%20%5Cdegree%20%7D%7B3%7D%20%5C%5C%20%20%5C%5C%20%5Cimplies%20%5C%3A%20x%20%20%3D60%20%5Cdegree)
It should be 792.4 Hope that helps!
Since there are 60 seconds in an hour, we know to divide by 105 by 60, which gives us 1.75. Then we round 1.75 to 2.
Therefore, his serve will travel 2 miles per second.
The given model would make the least sense to use for x=-2.75.
the given function is:
![h(x)= -16x^2 +100](https://tex.z-dn.net/?f=h%28x%29%3D%20-16x%5E2%20%2B100)
a quadratic relationship,
where
h is the height in feet
x is the time in seconds
<h3>what is kinetic energy?</h3>
Kinetic energy is a form of energy that an object or a particle has by reason of its motion.
as we know that time always appears to run forward, never backward. cannot take negative values so option 1 i.e 2.75 is not possible. Also, after a certain period of time object will vanish all its kinetic energy, resulting in h=0 but h(-2.75)= -21 which is meaningless.
h(-2.75) = ![-16*(-2.75)^2+100 = -21\\](https://tex.z-dn.net/?f=-16%2A%28-2.75%29%5E2%2B100%20%3D%20-21%5C%5C)
h(0.25) = ![-16*0.25^2 +100=99](https://tex.z-dn.net/?f=-16%2A0.25%5E2%20%2B100%3D99)
![-0.25^2*16+100=99](https://tex.z-dn.net/?f=-0.25%5E2%2A16%2B100%3D99)
h(1.75) = ![-16*1.75^2+100=51](https://tex.z-dn.net/?f=-16%2A1.75%5E2%2B100%3D51)
h(25) = ![-16*2.25^2+100= 19](https://tex.z-dn.net/?f=-16%2A2.25%5E2%2B100%3D%2019)
therefore, x=-2.75 this model would make the least sense to use
to get more about kinetic energy refer to:
brainly.com/question/114210