Answer:
27/4
Step-by-step explanation:
To find the answer, all you would need to do is multiply the denominator by the whole number and add the numerator. And so if you multiply the denominator (4) by the whole number (6) , and add the numerator (3) , you will get the answer: 27/4
Using the equation, the amount of ribbon she needs to sell to break even is 50 ribbons.
<h3>How to represent system of equation and solve?</h3>
x = number of ribbons
y = expenses or revenue
Therefore, the system of equation for this situation is as follows;
y(expenses) = 23 + 0.04x
y = 23 + 0.04x
He charges $0.50 per ribbon. Therefore,
y(revenue) = 0.50x
y = 0.50x
Therefore, for her to break even,
23 + 0.04x = 0.50x
23 = 0.46x
x = 23 / 0.46
x = 50
Therefore, she needs to sell 50 ribbons for her to break even.
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The first one is true, so is the fourth one. The second one is not true and I'm not sure about the 3rd one, you would have to write them all out in numerical order and find the one in the middle
Answer:
554 executives should be surveyed.
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Z-table as such z has a p-value of 
.
That is z with a pvalue of 
, so Z = 1.96.
Now, find the margin of error M as such
In which 
is the standard deviation of the population and n is the size of the sample.
Standard deviation of 3 hours.
This means that 
The 95% level of confidence is to be used. How many executives should be surveyed?
n executives should be surveyed, and n is found with 
. So
Rounding up:
554 executives should be surveyed.
Answer:
21.5
Step-by-step explanation:
Counting the full squares: 16
Counting the squares that are more than 1/2: 6
The best estimate would be 21.5
