Will mark correct answer answer brainliest! together, tran and luis take 6 hours to deliver newspapers. if tran works alone, it takes him 9 hours. how long would it take luis, working alone, to deliver all the newspapers? options: 12 hours 15 hours 18 hours 16 hours

It will take luis 18 hours

Step-by-step explanation:

1/a + 1/b = 1 /t

where a is  the time for one individual working alone

b  is the time the second individual working alone

t is the time the two individuals working together

let a = time for tran to work

b = time for luis  to work

1/9 + 1/b =1/6

multiply by 36b to clear the fractions

36b *(1/9 + 1/b) =1/6 * 36b

4b + 36 = 6b

subtract 4b from each side

36 = 2b

divide by 2

18 = b

It will take luis 18 hours

3=log(n)=2

answer a: product property

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.