Answer: 12 hours
Step-by-step explanation:
Given : Working together, it takes Sam, Jenna, and Francisco two hours to paint one room.
When Sam works alone, he can paint one room in 6 hours. When Jenna works alone, she can paint one room in 4 hours.
Let 't' be the time taken by Francisco to paint one room on his own.
Then , we have
Rate of work of Sam +Rate of work of Jenna + Rate of work of Francisco =Rate of work they all do together

i.e. 
i.e. 
i.e. 
i.e. 
i.e. 
i.e. 
i.e. t= 12
Hence, Francisco would take 12 hours to paint one room on his own.
Step-by-step explanation:
where is the question huh ?
Answer:
the tan of 36° = 0.726
Step-by-step explanation:
if you go on your calculator an press tan then 36 it gives you the answer
Answer:
12
Step-by-step explanation:
The common ratio is 1.5. If the input is 8, the output has to be 12.
Answer:
<h2>

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Step-by-step explanation:

Divide both sides of the equation by 3

Write 7x as a difference

Factor out 3x from the expression

Factor out -4 from the expression

Factor out 2x + 5 from the expression

When the product of factors equals 0 , at least one factor is 0


Solve the equation for X

Move constant to R.H.S and change its sign

Calculate the difference

Divide both sides of the equation by 2

Calculate

Again,

Move constant to RHS and change its sign

Calculate the sum

divide both sides of the equation by 3

Calculate

Hope this helps..
Best regards!!