Answer:
0.00118063754
is right...
Step-by-step explanation:
Let the origin of the coordinate system be the position of ship B at noon. Then the distance between the ships as a function of t (in hours) is
.. d = √((30 +23t)² +(17t)²)
.. = √(818t² +1380t +900)
The rate of change of distance with respect to time is
.. d' = (1/2)(2*818*t +1380)/√(818t² +1380t +900)
.. = (818t +690)/√(818t² +1380t +900)
At t=4, this is
.. d' = (818*4 +690)/√(818*16 +1380*4 +900)
.. = 3962/√19508
.. ≈ 28.37 . . . . . knots
The distance between the ships is increasing at about 28.37 knots at 4 pm.
d-Denis
e-Earl
d+e=42
e+8=d
e+8+e=42
2e+8=42
2e=34
e=17
d=17+8=25
Denis is 25 and Earl is 17
A right angle triangle will follow Pythagorean theory where a^2(hypotenuse)= b^2+ c^2
Therefore 17^2=11^2+ c^2
289=121 + c^2
168 = c^2
c= 13 rounded to the nearest tenth
Answer: -6 is greater than the left side. So the answer will be less than -6
Step-by-step explanation: for example. The answer could be -7 or -8, (those arent calculated answers)