An experienced window washer can wash all the windows in mike’s house in 2 hours, while a new trainee can wash all the windows in 7 hours. how long would it take them working together? round your answer to the nearest minute if needed.

It would take 1.55 hours or 93.6 minutes for them if they work together.

Solution:

Let us assume together both can complete the work in x hours.

Experienced window washer can wash the house in 2 hours.

So, in 1 hour he will do, part of the house

Hence, in x hours he will do part of the house

Again the trainee can wash all the windows in 7 hours

So, in 1 hour he will do, part of the house

Hence, in x hours he will do part of the house

We can now say,

They can complete in 1.55 hours.

1 hour = 60 minutes

So, according to unitary method, .

sorry i need the points

step-by-step explanation:

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the answer would be d.

step-by-step explanation:

move all variables to the left side and all constants to the right side

(x−3)^2+(y−1)^2=16

this is the form of a circle. use this form to determine the center and radius of the circle.

( x − h ) 2 + ( y − k ) 2 = r 2

match the values in this circle to those of the standard form. the variable   r   represents the radius of the circle,   h   represents the x-offset from the origin, and   k   represents the y-offset from origin.

r = 4

h = 3

k = 1

the center of the circle is found at   ( h , k ) .

center:   ( 3 , 1 )

these values represent the important values for graphing and analyzing a circle.

center:   ( 3 , 1 ).

radius:   4