Answer:
436
Step-by-step explanation:
(10 x 15 x 2) + (12 x 18 x 1/2) + 18 + 10 = SA
300 + (12 x 18 x 1/2) + 18 + 10 = SA
300 + 108 + 18 + 10 = SA
300 + 108 + 28 = 436
436
Answer:
6 3/4 cups.
Step-by-step explanation:
Multiply 3/4 by 9.
<em>Hope this helps!</em>
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
