<span>5x²y + 2xy² + x²y
Combining like terms would be
6x²y + 2xy²
The two terms are now unique and cannot be combined any further. </span><span>
</span>
Answer: 0.0026
Step-by-step explanation:
Given: Mean : 
Standard Deviation : 
Sample size : 
Formula to calculate z-score :-

For X=7.6 hours.


Hence, the probability that their mean rebuild time is less than 7.6 hours = 0.0026
Answer:
<h2>82 in²</h2>
Step-by-step explanation:
The median of the four numbers a, b, c and d. Where a ≤ b ≤ c ≤ d:

We have
84in², 72in², 80in², 84in² → 72in², 80in², 84in², 84in²
The median:
