.75x+1.29y < $7.00
x represents how many bagels he can buy
y represents how many cream cheese containers he can buy
Your answer is 3. 3*2= 6 6-7= -1 and if -1 is increased by 2 you get 1. So the mystery number is 3 I hope this helps:)
All it’s asking is how many students basically scored 90 and under. there’s a total of 25 kids and 14 scored a 90 or less.
The population standard deviation of the data set is 1.414.
<h3>What is standard deviation?</h3>
Standard deviation is used to determine how the values in a group differs from the mean of the values in the group. It is a measure of variation.
<h3>How is standard deviation calculated?</h3>
- Determine the mean of the observation
- Determine the difference between each value and the mean and then square the result
- Determine the mean of the sum of the squared differences and then find the square root of the mean:
Mean = (8 + 9 + 10 + 11 + 12) / 5 = 10
Sum of squared differences: (8 - 10)² + (9 - 10)² + (10 - 10)² + (11 - 10)² + (12 - 10)² = 10
√10/5 = 1.414
To learn more about standard deviation, please check: brainly.com/question/26201837
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25 is the answer hope that helped