If you randomly purchase one item, the probability it will last longer than 9 years is; 11.12%
<h3>How to find the probability from z-score?</h3>
The formula for Z-score is;
z = (x' - µ)/σ
where;
x' = sample mean
µ = population mean
σ = standard deviation
Thus;
z = (9 - 7.9)/0.9
z = 1.22
From online p-value from z-score calculator, we have;
probability = 0.1112 = 11.12%
Read more about Z-score probability at; brainly.com/question/25638875
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Step-by-step explanation: it is the same equation but they switched the numbers around on the other side of the equal sign so therefore its associative property
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step 4; csc(x)
Step-by-step explanation:
took the test and guessed
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3+32+60+16= 111 sides.
Step-by-step explanation:
Make sure to multiply each number of a singular shape by its number of sides then add them all together at the end :)
