Answer:
1.42 hours
Step-by-step explanation:
In this case we must take into account that the speed would be to fill a pool for a time, that this case is in hours, therefore it would be like this:
1/5 for the first pipe
1/2 for the second pipe
Now, we will use both at the same time, therefore:
1/5 + 1/2 = 1 / x
0.7 = 1 / x
x = 1 / 0.7
x = 1.42
That is to say that if we use both we will take a total of 1.42 hours
(-43) x 7 x (-21) = 6,321
Answer:
so what should we do it is incomplete answer
Step-by-step explanation:
42
Answer:
-2 and 26
Step-by-step explanation:
Multiply to -52:
-2 * 26= -52
Add to 24
-2+26= 24
Well the perimeter is 12x2 +16x2=56cm
