f(x) = -3x + 4 is the answer you're looking for.
Answer:
a) d= 2x + (54/x)
b) x = √27 m ≈ 5.2 m
Step-by-step explanation:
a) Given
The average number of drops = n
Height in meters from the point where the whelk is dropped = x
If n(x) = 1 + (27/x²)
Then, the total vertical distance the crow travels upward to open a whelk is the height (x) times the average number of times the crow has to fly upwards to try again
d = 2xn = 2x*(1 + (27/x²)) = 2x + (54/x)
b) To minimize the distance consider the first derivative
d' = (2x + (54/x))' = 2 - (54/x²)
and d' = 0 give us (x must be positive)
2 - (54/x²) = 0 ⇒ x = √27 m ≈ 5.2 m
Answer:
multiply both sides by
Step-by-step explanation:
Given
x - 8 = 12
first step
Add 8 to both sides
x = 20
second step
Multiply both sides by to clear the fraction
x = × 20 = 30
Answer:
Step-by-step explanations:
check the picture below.
recall that negative angles move "clockwise", like the hands on a clock.