Answer:
20 days
Step-by-step explanation:
t = time required by one worker to complete the job alone
(t+8) = time required by the other worker
So:
7.5/ t + 7.5/ (t + 8) = 1
Solve for t.
...
t = 12 days, the first guy working alone
The other worker would finish the job in 20 days.
Answer:
Simplify
x
=
35.99
dollar
11.33
dollar
.
x
=
3.1765225
Step-by-step explanation:
Answer:
C) x/2 +2y = 4
Step-by-step explanation:
Of the equations offered, only equation C has the given point as a possible solution.
___
Since the graph is not given, we don't know if the given point is on the graphed equation.
Answer:

Step-by-step explanation:
From the differential equation given:

The equation above can be re-written as:


Let assume that if function M(x,y) and N(x,y) are continuous and have continuous first-order partial derivatives.
Then;
M(x,y) dx + N (x,y)dy = 0; this is exact in R if and only if:

relating with equation M(x,y)dx + N(x,y) dy = 0
Then;

So;


Let's Integrate
with respect to x
Then;


Now, we will have to differentiate the above equation with respect to y and set
; we have:

Hence, 
Finally; the general solution to the equation is:
