9514 1404 393
Answer:
1.9 degrees per second
Step-by-step explanation:
The angle α the line makes with the water can be described by ...
Sin = Opposite/Hypotenuse
sin(α) = 10/(25 -1.9t)
Taking derivatives gives ...
α'·cos(α) = -10(-1.9)/(25 -1.9t)²
Then the rate of change of the angle at t=0 is ...
α' = 19/(25²·cos(α))
Of course, cos(α) = √(1 -sin(α)²) = √(1 -(10/25)²) = √(21/25), so we have ...
α' = 19/(125√21) . . . radians/second
α' ≈ 0.033269 radians/s ≈ 1.90 degrees/s
Final list of friends = 10
Possible number of friends who can sit close to the head table = 6
This is a question of the number of combinations in choosing 6 friends from the list of 10 friends.
That is,
Number of ways = 10C6 = (10!)/[6!*(10-6)!] = 3628800/(720*24) = 210 ways.
2/w = x/5
using cross products
2*5 = w*x
10 = w*x
divide by x on each side to get w alone
10/x = w*x/x
10/x = w
The answer is 63/5 please give me brainlesty
The answer is b -3.6 hope this helps and god bless my friend
