Shelby has a lemonade stand in her front yard. She has enough supplies to make a maximum of 192 ounces of lemonade. A large cup
1 answer:
Considering the capacity of each cup, the inequality that models the situation is:
D) 14x + 8y ≤ 192
- A large cup holds 14 ounces of lemonade.
- There are x large cups.
- A small cup holds 8 ounces of lemonade.
- There are y small cups.
From the bullet-point, the total amount that can be held is:
She has enough supplies to make a maximum of 192 ounces of lemonade, hence:
Hence option D is correct.
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Answer:
n=1705
Step-by-step explanation:
The margin of error is the range of values below and above the sample statistic in a confidence interval.
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
Assuming the X follows a normal distribution
And the distribution for is:
We know that the margin of error for a confidence interval is given by:
(1)
The next step would be find the value of ,
and
Using the normal standard table, excel or a calculator we see that:
If we solve for n from formula (1) we got:
And we have everything to replace into the formula:
And if we round up the answer we see that the value of n to ensure the margin of error required mm is n=1705.