Find all two-digit numbers with the following property: difference of that number and the number with its reversed digits is 36.
1 answer:
You might be interested in
Recall your d = rt, distance = rate * time.
b = speed rate of the boat.
c = speed rate of the current.
keeping in mind that, as the boat goes Upstream, against the current, it's speed is not "b", but is really " b - c ", because the current is subtracting speed from it.
likewise, when the boat is going Downstream, because is going with the current, is really going faster at " b + c ".
what is the speed of the boat? well, 61 + c = b.
b = speed rate of the boat.
c = speed rate of the current.
keeping in mind that, as the boat goes Upstream, against the current, it's speed is not "b", but is really " b - c ", because the current is subtracting speed from it.
likewise, when the boat is going Downstream, because is going with the current, is really going faster at " b + c ".
what is the speed of the boat? well, 61 + c = b.
Answer:
B
Step-by-step explanation:
The volume (V) of a pyramid is calculated as
V = area of base × perpendicular height (h)
area of square base = 12 × 12 = 144 units² and h = 8, hence
V = × 144 × 8 =
= 384 units³ → B