Answer:
-x • (81x3y4 + 343x2y2 - 7938x - 3969y2)
———————————————————————
441
Answer:
C. Between 4 and 5.......
For 8 batches of brownies, you’ll need 4 cups of sugar
We know that
<span>1. The number of all 4-letter words written using the alphabet of 20 symbols (from A to T) is
20</span><span>^4=160,000
</span><span>
2. The number of all 4-letter words written using the alphabet of 19 symbols (from B to T) is
19</span><span>^4=130,321
</span><span>
3. The difference represents exactly the number of all words of the inhabitants of the island of Jumble
difference=</span>(160,000-130,321)= 29679.
the answer is
29679
I believe about two thirds
