Answer:
<h2>10</h2>
Step-by-step explanation:
Given the following parameters
standard deviation σ = 2.5
z-score Z = 2.4
observed value x = 16
Mean of the dataset μ = ?
Using the formula for calculating the z-score as shown to calculate the mean

On substituting the values;

The mean of the dataset is 10
First: (X+3)(x+3) foil it.
Then distribute the 3x among the values and combine like terms
Answer: 25 pounds
Step-by-step explanation:
1 pound = 16 oz
400 oz / 16 oz = 25 pounds
I am not a professional, I am simply using prior knowledge!
Note- It would mean the world to me if you could mark me brainliest!
Since Jin donated his money to charity and he donated $864, that is our total.
We don't know the first amount, so we can call it x.
We don't know the second amount either, but we do know it was 5 times the first, so 5*x = 5x.
We first need to find how much Jin earned for the first song. We need to find x.
x + 5x = 864, then combine like terms
6x = 864, then divide both sides by 6
6x/6 = 864/4
x = 144
The fist song made $144. But the second made 5 times that. So we just multiply 144 by 5. 144*5=720.
The final answer is $720.