I think it is
(-infinity, infinity)
The equation for solving the volume of a pyramid is equal to,
Volume = Bh/3
where B is the area of the base and h is height.
To compute for the area of the base, we use the equation,
A = aP/2
where a is apothem and P is perimeter. Substituting the known values,
A = (3 mm)(5 x 4 mm) / 2 = 30 mm²
Substituting the computed value to the equation for volume.
V = (30 mm²)(4.1 mm) / 3 = 41 mm³
Thus, the answer is letter A.
Answer:
Step-by-step explanation:
- Start time = 2 PM
- Speed of the first train = 50 mph
- Speed of the second train = 60 mph
- Trains head same direction
- The second train spends 3 hour less time than the first but both take same distance
<u>Let the time in travel for the first train be x, then we have equation for distance:</u>
- 50x = 60(x - 3)
- 50x = 60x - 180
- 60x - 50x = 180
- 10x = 180
- x = 18 hours
<u>Time when the second train caches up the first one:</u>
- 2 PM + 18 hours = 8 AM next day
