Answer:
-1/4
Step-by-step explanation:
y=x
y=20
x=5
y=_x
20=k(5)
20/5=4
k=4
-1=4(x)
-1/4=x
By setting up a system of equations we can easily solve this problem. Let's denote Jane's working hours with x and Jack's working hours with y. Since they don't want to work more than 65 hours, the first equation is x+y=65. The second equation is 14x+7y=770. By solving this system of equation

, we find that y=20 hours, which is Jack's maximum working hours.
Answer:
5
Step-by-step explanation:
because i did it its 5
ANSWER:
6 cents
Step-by-step explanation:
$60.00 divided by 100 = 0.6
Answer:
Step-by-step explanation:
1/7+1/13=1/t
multiply both sides by 7*13*t
13t+7t=7*13
21t=91
t=91/19
it will take 4 hours and 8 minutes