Sam can paint a house in 8 hours. joe can paint the same house in 4 hours. how long does it take them to paint the house together? round to 1 decimal place.

it takes themApproximately 2.7 hours to paint the house together

Step-by-step explanation:

Sam can paint a house in 8 hours. This means that sam's unit rate of working is 1/8

Joe can paint the same house in 4 hours.

This means that Joe's unit rate of working is 1/4

If they work together, it would take them lesser time because they are working simultaneously. This means that their unit rates are additive. Combining their unit rates, it becomes

1/8 + 1/4 = 3/8

Assuming that if they work together, it will take them t hours. Therefore, Their unit rate of working will be 1/t.

Therefore,

3/8 = 1/t

3t = 8

t = 8/3 = 2.667

Approximately 2.7 hours

2.7

Step-by-step explanation:

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is

r and t.

both are 64 degrees.