Answer:
40/9
Step-by-step explanation:
Use the work formula, 
+ 
= 
, where A is the amount of time it takes one person, B is the amount of time it takes another person, and T is the time it takes for them to work together.
Plug in the times for David and Alex alone:
+ 
=
Find the least common denominator, which is 40.
+ 
=
=
Cross multiply and solve for T:
9T = 40
T = 40/9
So, if they worked together, it would take them 40/9 hours
Answer:
∣∣3.45∣∣=3.45
Step-by-step explanation:
See how many others chose something else then graph it.
ANSWER
or
EXPLANATION
We want to find the equation in point-slope form of a line that passes through the points (3, −5) and (−8, 4).
The point-slope form is given by;
where
is the slope of the line.
If
The point-slope form is
On the other hand, if
Then the point-slope form is,
These two equations are the same when simplified.
