Answer:
StartFraction 6 Over x squared EndFraction
Step-by-step explanation:
Obviously, you prefer words to math symbols, so we'll show the solution using words.
The sum StartFraction 2 Over x squared EndFraction + StartFraction 4 Over x squared EndFraction equals StartFraction 2 plus 4 Over x squared EndFraction equals StartFraction 6 Over x squared EndFraction
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In appropriate symbols this would be ...
Pretty sure that you can't. It contains right angles
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
