Answer:
In order, they would be:
-4.45 min, -1.8 min, -(1 + 2/3) min, -1.375 min
Step-by-step explanation:
Enjoy :)
Answer: y-4=0
Step-by-step explanation:
Answer:
24.83 hours
Step-by-step explanation:
Given that :
Let time taken by pumps be :
Pump A = 60 hours
Pump B = 80 hours
Pump C = 90 hours
Recall :
Rate = 1 / time taken
The rates of the pumps are :
Pump A rate = 1 / 60
Pump B rate = 1/80
Pump C rate = 1/90
Combined rate : 1/60 + 1/80 + 1/90
Combined rate = (12 + 9 + 8) / 720 = 29/720
Combined rate = 29/720
The time taken together will be :
1 / combined rate = 1/(29/720) = 720 / 29 = 24.827 hours
Answer:
13.5
Step-by-step explanation:
(Are you meaning this as the answer is a decimal?)
3/50 * 225/1
<em>Cross-cancel 50 and 225 by cancelling out 25.</em>
3/2 * 9/1
<em>Rewrite this so it is a single fraction.</em>
(3 * 9)/2
<em>Multiply 3 by 9 to get 27.</em>
27/2
<em>Divide 27 by 2 to get 13.5.</em>
13.5
6% of 225 is 13.5.
Answer: -x + 4y
Step-by-step explanation:
-3(2x-y) + 2y+2(x+y)
-6x + 3y + 2y + 2x + 2y
-6x + 2x +3y + 2y + 2y
-6x + 5x + 4y
-x + 4y
