Answer:
It would take 10 days to completely empty the rain gauge.
Step-by-step explanation:
Initial reading of rain gauge = 10 inches
<u>Every day rain evaporated by 2 inches but 1 more inch of rain was added.</u>
<u>In effect, only one inch of rain water evaporated that is everyday level decreased with 1 inch.</u>
After the end of day 1 , the reading would show 9 inches and 8 inches at the end of day 2 and similarly reading decreases linearly.
Since the reading should decrease by 10 inches it would take 10 days to completely empty the rain gauge.
Answer:
-24x2y2z2
Step-by-step explanation:
There are 5 significant figures.
If the first letter is a vowel, there are 6*26 = 156 possibilities.
If the second letter is a vowel, there are 26*6 = 156 possibilities.
The sum of these numbers is 2*156 = 312, but that counts double-vowel words twice. There are 36 of those.
The number of possible unique 2-letter pairs is 312 - 36 = 276.