Answer:
Step-by-step explanation:
ignore the "at the instant the man is 30 feet away" part, set it as X and the man's shadow as Y.
Similar triangles so we can do
.
Solve for it we get 44y = 6x
Differentiate relative to time t, we get 44y' = 6x'.
change in x (x') is equal to 5. And we get the answer y' =
.
the
ft/sec is the rate of which the length of the shadow is changing. add 5 to it for the rate of the tip of his shadow moving away from the tower.
Answer:
Check the attached document for the solutions, cheers
Step-by-step explanation:
Answer: c. x=-1 and x=7
Step-by-step explanation:
Answer:
100.062
Step-by-step explanation:
100 + 62/1000 = 100 + 0.062 = 100.062
The equation must be 4x + y = 17
I will use the y-intercept slope version
y = - 4x + 17
Then the slope is negative (-4) and the y-intercept is 17.
The line passes through the points (0,17) and (0,17/4). The negative slope indicates that the line goes down from left to right (y decreases when x increases).