s=√\frac{n}{n-1} [tex]n∑(x₁-x⁻)^2
i=1
Answer:
200$
Step-by-step explanation:
In this case, we already know the ratio between the savings and the spendings and it's 3:5.
This means that for every 3$ saved, Sam spents 5$.
Then, we only need to do a simply rule of 3, to stablish the amount spended.
If:
120 ---------> 3
X ------------> 5
Solving for X, we have:
120/X = 3/5
X = 120 * 5 / 3
X = 600 / 3
X = 200$
If you want to verify that this calculation is correct, then do the ratio between 120 and 200. If the ratio is 3:5 is correct. Here's the demostration:
120/200 --->simplified by 10: 12/20 ------->simplified by 4: 3/5
Answer:
1125000 millileters
Step-by-step explanation:
Step one
given data
Each horse drinks 45000 millileters of water each day.
Hence Five horse will drink
45000*5
=225000 millileters of water each day.
Step two:
In 5 days they will all drink
225000 *5
=1125000 millileters o fwater
The answer is: D) 115
The explanation is shown below:
1. You have that the frequency with which a cricket chirps varies directly with the temperature, which you can express it as following:
Where is the frequency with which a cricket chirps, is the temperature and is the constant of proportionality.
2. If the cricket chirps 100 times per minute in 80° weather, you can calculate as below:
3. Therefore, the frequency in 92° weather is: