Answer:
984 adults
281 teens
492 children
Step-by-step explanation: Multiply the total by the corresponding percentage to find the number. We assume the percentages have been rounded, so some adjustment is needed in the result of the multiplication.
{adults, teens, children} = 1757 × {.56, .16, .28} = {983.92, 281.12, 491.96}
≈ {984, 281, 492}
Answer:
- At 1pm, the number of bacteria in the dish is 1,000,000
- At 12pm, the number of bacteria in the dish is 500,000
Step-by-step explanation:
Given the information on the table
![\left|\begin{array}{c|c}$Hour&$Number of Bacteria (in millions)\\---&--------------\\12 p.m.&\\1 p.m.&\\12 p.m.&\\2 p.m.&\\3 p.m.&\\4 p.m.&\\5 p.m.&32\\6 p.m.&64\end{array}\right|](https://tex.z-dn.net/?f=%5Cleft%7C%5Cbegin%7Barray%7D%7Bc%7Cc%7D%24Hour%26%24Number%20of%20Bacteria%20%28in%20millions%29%5C%5C---%26--------------%5C%5C12%20p.m.%26%5C%5C1%20p.m.%26%5C%5C12%20p.m.%26%5C%5C2%20p.m.%26%5C%5C3%20p.m.%26%5C%5C4%20p.m.%26%5C%5C5%20p.m.%2632%5C%5C6%20p.m.%2664%5Cend%7Barray%7D%5Cright%7C)
We are to follow the pattern to determine how many million bacteria were in the dish at 1 p.m. and 12 p.m.
Now:
![32=2^5\\64=2^6](https://tex.z-dn.net/?f=32%3D2%5E5%5C%5C64%3D2%5E6)
It therefore means that the bacteria population doubles every hour. Following this pattern and reducing the exponents by 1 backwards, we have:
![\left|\begin{array}{c|c}$Hour&$Number of Bacteria (in millions)\\---&--------------\\12 p.m.&2^{-1}=0.5\\1 p.m.&2^0=1\\12 p.m.&2^1=2\\2 p.m.&2^2=4\\3 p.m.&2^3=8\\4 p.m.&2^4=16\\5 p.m.&2^5=32\\6 p.m.&2^6=64\end{array}\right|](https://tex.z-dn.net/?f=%5Cleft%7C%5Cbegin%7Barray%7D%7Bc%7Cc%7D%24Hour%26%24Number%20of%20Bacteria%20%28in%20millions%29%5C%5C---%26--------------%5C%5C12%20p.m.%262%5E%7B-1%7D%3D0.5%5C%5C1%20p.m.%262%5E0%3D1%5C%5C12%20p.m.%262%5E1%3D2%5C%5C2%20p.m.%262%5E2%3D4%5C%5C3%20p.m.%262%5E3%3D8%5C%5C4%20p.m.%262%5E4%3D16%5C%5C5%20p.m.%262%5E5%3D32%5C%5C6%20p.m.%262%5E6%3D64%5Cend%7Barray%7D%5Cright%7C)
Therefore:
- At 1pm, the number of bacteria in the dish is 1,000,000
- At 12pm, the number of bacteria is 0.5 million=0.5 X 1,000,000=500,000
Answer:
first one is a 20 prcent decrease from x to y
and for the second one is it a 37.5 percent increase
Step-by-step explanation:
hope this helped
Answer:
9,600
Step-by-step explanation:
You take 32% of 30,000 and boom