Darren can mow the lawn in 20minutes ,while valerie needs 30 minutes to do the same job. how many minutes will it take them to mow the lawn if they work together?

answer:

10 minutes

step-by-step explanation:

instead of adding the minutes, you subtract the minutes because if they work together, they do faster work.

the answer to the question is a

step-by-step explanation:

it has the same slope and the same y-intercept.

y + 11 = -7/9(x - 18)

y + 11 =-7/9x + 14

b

y = -7/9x + 3

y-intercept (0, 3)

coin flip

non-answer:

choosing

sorry if this isnt what you're looking for i dont really understand the question