Answer:
Step-by-step explanation:
To put factor back into the square root, we have to put squared value.
like 6 can be written as 
.
Similarly, 5 can be written as 
= 
= 
=
I3/I6(8O)= 65m of electrical cable left
Number of jobs=1
Time:
<span>Since ‘x’ is given as a variable in the choices, we should reserve it for Kate and use ‘y’ for Jean as follows: </span>
<span>
Kate: => x </span>
<span>Jean: => y </span>
<span>But y = x - 5 </span>
<span>Combined rate: </span>
<span>1/x+ 1/y </span>
<span>= (x + y)/(xy) </span>
<span>Number of jobs done: </span>
<span>
Number of days X combined rate = number of jobs </span>
<span>6 [(x + y)/(xy)] = 1 </span>
<span>6x + 6y = xy </span>
<span>6x + 6(x - 5) = x(x - 5) </span>
<span>6x + 6x - 30 = x² - 5x </span>
<span>12x - 30 = x² - 5x </span>
<span>x² - 17x + 30 = 0
</span>
Therefore, the answer would be A.
You subtract 2x from both sides so you would get -3y=8-2x. finally you divide by -3 o both sides so your answer is y=8-2x/-3
