<h2>
Option D is the correct answer.</h2>
Step-by-step explanation:
For the first 5 hours of a trip, a plane averaged 120 kilometers per hour.
Distance traveled in first 5 hours = 5 x 120 = 600 km
Let the remainder time be t hours.
For the remainder of the trip, the plane traveled an average speed of 180 kilometers per hour.
Distance traveled in remaining hours = 180 x t = 180t
Total distance traveled = 600 + 180t
Total time taken = 5 + t
Average speed of entire journey = 170 km/hr
We have
Total distance traveled = Average speed of entire journey x Total time taken
600 + 180t = 170 x (5+t)
600 + 180t = 850 + 170t
10t = 250
t = 25 hours
Total time taken = 5 + 25 = 30 hours
Option D is the correct answer.
Answer:
Step-by-step explanation:
Given that:
Little Gull Island Lighthouse shines a light from a height of 91 feet above the sea level.
The angle of depression is unknown.
Distance of the point at sea surface from the base of lighthouse is 865 ft.
This situation can be modeled or can be represented as the figure attached in the answer area.
The situation can be represented by a right angled in which we are given the base and the height of the triangle.
And we have to find the value of (Because they are the internal vertically opposite angles).
Using tangent ratio:
Therefore, the angle of depression is:
Answer: 1
Explanation: anything to the power of 0 is 1 so if it is x to the power of 0 it would be 1
Answer:
a)4c +12 b)10x + -14 c) 3x+5 d)11y+(-1)
Step-by-step explanation:
as the nos without the variables can be added we can add the integers