Answer:
Simon takes approximately 13.76 hours to complete the job alone.
Step-by-step explanation:
We are given the following in the question:
Kamila can do a job in 26 hours
So, part of work done by Kamila in 1 hour =
Simon and Kamila working together can do the same job in 9 hours
.
So, (Simon and Kamila)'s 1 hour work =
So, Simon's 1 hour work =
So,
Simon can do 
part of work in hour = 1
Time taken by Simon to complete the job alone =
Thus, Simon takes approximately 13.76 hours to complete the job alone.
Answer:
A,
Step-by-step explanation:
Wouldn't you just do 10 divided by 12
Answer:
C. When the equations -10x + 5y = -60 and -3x − 5y = -5 are added together, a third linear equation, -13x = -65, is formed, and it shares a common solution with the original equations.
Step-by-step explanation:
2x-y=12
-3x-5y=-5
multiply the first equation by -5
-10x +5y = -60
add the 2 equations together
-3x-5y=-5
-10x +5y = -60
-------------------------
-13x = -65
We use the addition property of equality which says adding the same thing to both sides, doesn't change the equation, so we will get the same answer as the original equation
Answer:
x = 9
Step-by-step explanation:
7x = 63
Divide each side by 7 to isolate x
7x/7 = 63/7
x = 9
