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NEED HELP PLZ DUE IN 20 AND CAN YOU SHOW WORK PLZ

NEED HELP PLZ DUE IN 20 AND CAN YOU SHOW WORK PLZ-example-1
User Adam Casey
by
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1 Answer

2 votes

Answer:

59.) 80 smokers, 280 nonsmokers.

61.) 240 men, 200 women

Explanation:

59.)

Start with:


(2)/(7)= (x-100)/(x+100)

Cross product.


2x+200=7x-700

Subtract
2x from both sides of the equation.


200=5x-700

Add
700 to both sides of the equation.


900=5x

Divide by
5


x=180

Substitute in your x-value.


(180)-100 = 80


(180)+100= 280

61.)

Start with:


6x+5x=440

Combine like terms.


11x=440

Divide by the coefficient of
x, which is
11


x=40

Substitute.


6(40)=240


5(40)=200

User Kostek
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