Answer:
Step-by-step explanation:
Let's apply the formula (x+y)² = x² + 2xy + y²
Here, x = -a and y = b
So,
= (-a)² + 2(-a)(b) + (b)²
= a² - 2ab + b²
Hence, it has been proved that (-a + b)² = a² - 2ab + b².
Hope this helped!
<h3>~AH1807</h3>
ThHow many people younger than 50 are playing bingo?e following histogram represents the ages of people who are playing bingo.
1 answer:
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Answer:
The required probability is 0.0855
Step-by-step explanation:
Consider the provided information.
The daily revenue has mean $7200 and standard deviation $1200.
The daily revenue totals for the next 30 days will be monitored.
As we know
Substitute in above formula.
From the standard normal table P( Z >1.3693) = 0.0855
Hence, the required probability is 0.0855