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 smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet

i dont get the question

step-by-step explanation: