John made 2 quarts of juice for a school party. He said that he made 2/4 cups of juice. Explain John's mistake.

1 answer:

5 0

The conversion from quarts to cups is:
1 cup = 1/4 quart
John made the mistake of using the conversion the other way around
Therefore, he thought that 1 quart was 1/4 cups instead.

This would result in John getting 2/4 cups rather than 8 cups, which should be the accepted value

Hope this helped ^_^

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Which properties justify the steps taken to solve the system? {2x−4y=−6

GenaCL600 [577]

For this case we have the following system of equations:
2x-4y = -6
3x + 2y = -1

Step 1:
We rewrite equation 2:
2x-4y = -6
6x + 4y = -2

Step 2:
We add both equations:
8x = -8

Step 3:
We clear x:
x = -8/8
x = -1

Step 4:
We use any equation and we clear y:
3x + 2y = -1
2y = -1-3x
y = -1 / 2 - (3/2) * x
y = -1 / 2 - (3/2) * (- 1)
y = -1 / 2 + (3/2)
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Answer:
x = -1
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3 years ago

4h−13=−9h What is the value of h?

asambeis [7]

Answer:

h=1

Step-by-step explanation:

4h=9h+13 ->changes sides so sign changes

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2 years ago

Read 2 more answers

The hourly wages earned by 20 employees are shown in the first box and whisker plot below. The person earning $15 per hour quits

serg [7]

I added the plots in the attachments.

Answer:

The mean will decrease

The median will remain the same

Explanation:

1- checking the mean:

Mean of the salaries is calculated as follows:

$Mean = \frac{sum-of-salaries}{number-of-employees}$

Now, we can note that two parameters affect the mean, let's consider each:

a. Number of employees:

We are given that one employee is replaced with another. This means that the number of employees did not change

b. Sum of salaries:

We are given that a person earning $15 left and the new person earns $7. This means that:

New sum of salaries = old sum of salaries - 15 + 7 = old sum of salaries - 8

This means that the sum of salaries decreased by 8

Now, for the mean:

We can conclude that since the numerator decreased while the denominator stayed the same, the mean will decrease

2- checking the median:

In the whisker plots, the median is represented by the vertical line inside the plot.

In the first plot, we can note that the vertical line is nearly half the distance between 9 and 10. This means that, for the first plot, the median is approximately 9.5

In the second plot, the place of the median is unchanged. It is still approximately midway between 9 and 10 which means that the median in the second plot is approximately 9.5

Therefore, the median of the data remains unchanged.

Hope this helps :)