I honestly need help with this
<h2>Steps:</h2>
So for this, we will be setting up a system of equations with the information we have:
Now we have our system of equations set up. Next, I will be using the substitution method to solve this system. So firstly, subtract y on both sides of the first equation:
Now, substitute x for (13 - y) in the second equation and solve for y as such:
Now that we have the value of y, substitute it into either equation to solve for x:
<h2>Answer:</h2>
<u>In short, the first number (x) is 8 and the second number (y) is 5.</u>
Answer:
900 large boxes were sold, and 750 small boxes.
Step-by-step explanation:
This question can be solved by a system of equations.
I am going to say that:
x is the number of large boxes of cookies sold.
y is the number of small boxes of cookies sold.
A total of 1,650 boxes of Girl Scout cookies were sold last week.
This means that
So
Each large box cost $3.50 and each small box cost $2.00. The Girl Scout group earned $4,650.
This means that
Since
900 large boxes were sold, and 750 small boxes.
The vertical line is solid, so it must contain the solution so the inequality must contain equal to.
Because the shaded region is to the right of the line the solution has to be greater than.
The equation would be X ≥ -2
<h3>Answers:</h3>
- Yes
- No
- No
- Yes
- Yes
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Explanations:
- A bell shaped curve is symmetric, meaning one half is a mirror copy of the other half. The mean, median and mode are both at the same value: at the center (which is where the peak is located).
- A bimodal curve is one where it has two peaks. This is because it has 2 modes. Both peaks are the same height. If one height was taller, then you'd only have 1 mode. The mean wouldn't be as useful because we'd lose information about the two different modes. The mean would be somewhere in between the two peaks, where not much data points reside.
- A skewed distribution is one where the tail is pulled from the main group/cluster. This pulls on the mean to be distorted from the center. If the tail is pulled to the right (right-skewed or positively skewed) then the mean is larger than it should be. If the tail is pulled to the left (left-skewed or negatively skewed) then the mean is smaller than it should be. It's better to use the median in this case. Example: home prices where large mansions are large outliers to make the mean larger than it should be, so the median home price is used instead.
- As discussed in part 1 above, the mean is useful here. A bell shaped curve is one type of symmetric curve, but there are infinitely many other kinds of symmetric curves possible. All that matters is that one side is reflected over the vertical center line to get the other half.
- A uniform distribution is symmetric. If the left and right endpoints are p and q, then the mean (p+q)/2 is the center and it is useful.