Answer:

Step-by-step explanation:
The required answer is the rate at which Machine A works when the two machines are combined.
Note: the rate of doing work is express as

Hence we can conclude that Machine A working rate is
and machine B working rate is

When the two machine works together, the effective working rate is

The fraction of the work that Machine B will not have complete because of Machine A help is the total work done by machine A
Hence the fraction of work done by A is expressed as


Hence the fraction of the work that Machine B will not have complete because of Machine A help is the total work done by machine A is 
Answer:
The answer is "Option b".
Step-by-step explanation:
The probability of the vehicle and also another entity getting shifted more carefully together because they keep moving across a planned site. so, if going to drive is a "closing possibility." In Just 0.99 USD per month, in which users can raise your chance by either a vehicle in front of you suddenly stop and fall on your street, that's why we can say, that choice b is correct.
The expression from the given options that is equivalent fraction -7/9 is -14/18.
<h3>What is a fraction?</h3>
Fraction can be described as the expression of numbers, which usually have the numerator and the denominator, and this do contains two integers arranged on each other.
From the given fraction,-7/9 if start o test the options by reducing them int their simplest form we will deduced that option B is correct because if we divide 14 by the factor of 2, and 18 by the factor of 2, then it will give us -7/9 which is a negative value of fraction in the question.
Therefore, option B is correct.
Learn more about fraction at:
brainly.com/question/11562149
#SPJ1
Check the complete options
A. 14/18
B. -14/18
C.21/27
D.35/45
Answer:
2/x + 3/y = 5
Step-by-step explanation:
A linear equation refers to any equation that can be written in the form;
ax+b=0 or y - mx -c = 0
The graph of a linear equation will always be a straight line; Vertical, horizontal or with a given degree of steepness (slope).
All the equations given are linear, except the last equation;
2/x + 3/y = 5. The exponents of the variables x and y is not 1 hence the equation is non-linear. Find the graph attached;