It takes emily eight hours to paint her house. mike can paint the same area in nine hours. find how long it would take them if they worked together.

7.58 hours

15.34 hours

3.56 hours

4.24 hours

it would take them 4.24 hours

Step-by-step explanation:

It takes Emily eight hours to paint her house. Her unit rate of working in terms of hours would be 1/8

Mike can paint the same area in nine hours. Mike's unit rate of working in terms of hours is 1/9

If both of them can work together,Then, the work would take lesser time because they would be working together at their own unit rates. This means that the rates are additive. Their combined rates would be 1/8 + 1/9

Let t be the time it takes them to finish the work together. This means that their unit rate of working together will be 1/t. Therefore,

1/8 + 1/9 = 1/t

17/72 = 1/t

17t = 72

t = 72/17

t = 4.24

dude thats to long figure it

step-by-step explanation:

easy its decreasing

step-by-step explanation:

because its top point is at the to of the graph on the left side (atleast from the veiw i see it) now if that top point wast in the lower part of the graph it would be increasing hope this have a nice day