Answer:
Yes,a similar formula is used to find all the products
Step-by-step explanation:
The formula applied in this case is;
(a+b)²= (a+b) (a+b)= a(a+b)+b(a+b) = a²+ab+ab+b²= a²+2ab+b²
In the first one;
In the second one;
⇒This is the same for the third and fourth product.
Let's check each option
Option A
The percentage of people choosing winter as their favorite season is
which equals to
%
The percentage of the other seasons are
Autumn = 24%
Spring = 16%
Summer = 40%
Option A is incorrect
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Option B
Out of the summer season, there are 24% female and 16% male
Option B is correct
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Option C
As explained for option A, the percentage of people who choose Autumn is 24% which isn't the smallest percentage.
Option C is incorrect
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Option D
There's 14% males and 10% female who choose Autumn as their favorite season.
Option D is incorrect since there's more male than the female who choose Autumn.
Answer: Option B
115+(4n-5)=180 115+4n-5=180. 4n=70 n=15
When you round 2.1 to the nearest whole number, the answer will be 2.