Acustomer service survey was conducted of 400 customers: 200 men and 200 women. the data on one of the questions show that 115 of the men and 165 of the women rate the customer service as excellent. what percentage of the men gave an excellent rating? what percentage of the women gave an excellent rating? what was the total percentage of customers giving an excellent rating?

a) 80% men, 65% women, 57% total customers
b) 69% men, 58% women, 73% total customers
c) 45% men, 68% women, 53% total customers
d) 57.5% men, 82.5% women, 70% total customers

d) 57.5% men, 82.5% women, 70% total customers

Explanation:

 To find out the percentage of men who rated the service as excellent, just divide the number of men who rated the service as excellent (115) by the total number of men (200) and multiply the result by 100.

(115/200) * 100 = 57.5%. Therefore, 57.5% of men rated the service as excellent.

Similarly, to find out the percentage of women who rated the service as excellent, just divide the number of women who rated the service as excellent (165) by the total number of men (200) and multiply the result by 100.

(165/200) * 100 = 82.5%. Therefore, 82.5% of men rated the service as excellent.

Finally, to find the total of people who rated the service as excellent, you must add the number of men and women who rated the service as excellent (115 + 165) and divide by the total number of man and women (400) and multiply by 100.

115+ 165 = 280

(280/400) * 100 = 70%

Therefore, 70% of people rated the service as excellent.

start by isolating the variable on one side by adding 43w^2 to both sides.   the equation will read:

25w^2+5=0

*subtract 5 from both sides*

25w^2=-5

*divide both sides by 25*

w^2=-1/5

*take the square root of both sides*

w=√(-1/5)

the square root of -1 is i.   the square root of 5 remains √5

the answer is i/√5.

hope this

answer; post closing trial balance;