Time=distance/speed
621÷51.75
=12
So it takes 12 hours
Given :
A submarine started at the surface of the water and was moving at -15 meters per minute.
The submarine traveled at this rate for 48 minutes before coming to rest on the ocean floor.
To Find :
The change in the submarine position.
Solution :
We need to find the position of submarine position from the surface of water.
Distance travelled = Speed × Time
Distance travelled = -15 m/min × 48 min
Distance travelled = 720 m
Therefore, the position of submarine is 720 m below the surface of ocean.
Answer:
C
Step-by-step explanation:
Remember the mnemonic: SohCahToa, where:

Let's determine our side lengths first.
Note that our angle is A. So, we have to determine the sides with respect to A.
The opposite side to A is 16.
The adjacent side is 12.
And the hypotenuse is 20.
With this, we can find our trig ratios:
Sine:

Substitute 16 for the opposite and 20 for the hypotenuse. This yields:

Reduce:

Cosine:

Substitute 12 for the adjacent and 20 for the hypotenuse. This yields:

Reduce:

Tangent:

Substitute 16 for the opposite and 12 for the adjacent. This yields:

Reduce:

So, our answers are:

Out of the answer choices, the choice that represents this is C.
So, our correct answer is C.
And we're done!
Answer:
a) 10/3
Step-by-step explanation:
2x - 6 + 5x = 1/3 x - 9 + 2y
7x - 6 = 1/3 x - 9 + 2y
or
2y = 7x - 1/3 x - 6 + 9
2y = 21/3 x - 1/3 x + 3
2y = 20/3 x + 3
y = 20/6 x + 3/2
y = 10/3 x + 3/2
Y = mx + b where m = slope
In this case slope m = 10/3