Answer:
Step-by-step explanation:
Given data
breadth=9 in
Length=11 in
Now a square of side x is cutted for each corner such that the cardboard is made into a open-top box with
length=11-2x
breadth=9-2x
height=x
Here substract 2x because from both sides of length and breadth x units are reduced.
therefore volume of new open-top box is
Volume(v)=
Answer:
19
Step-by-step explanation
Let the sum of n terms of A.P. = Sn
Answer:
x = 6
Step-by-step explanation:
2x + 3 = 4x + -9
2x + 3 = 4x - 9
-2x -2x
3 = 2x - 9
+9 +9
12 = 2x
6 = x
Answer:
40 hours will it take for the pool to fill.
Step-by-step explanation:
A pump can fill a swimming pool in 8 hours.
Work done by pump to fill in 1 hour is 
The pool also has a drain that can empty the pool in 10 hours.
Work done by pump to drain in 1 hour is 
If someone turns on the pump to fill the pool, but forgets to shut the drain.
Work done by both pipe in 1 hour is




Both pipe filled
part of pool in hours = 1
Both pipe filled complete pool in hours = 
Therefore, 40 hours will it take for the pool to fill.
Answer: 49
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Step-by-step explanation: