Answer:
If simple interest, 2300+(2300*0.07)*9
If compound, 2300+(2300*0.07)^9
let's label each pump A, B, and C, just for convenience. A fills the tank by 1/50 every minute, B fills the tank by 1/60 every minute, and C drains it by 1/75 every minute. Now we can put them all into one function: t(1/50 + 1/60 - 1/75) = 1, where t = our time in minutes and 1 = the tank being full.
next, we solve for t: t = 300/7 minutes, or approximately 42.86 minutes.
Answer:

Step-by-step explanation:
#We use the base diagonal and the height diagonal to calculate the beam's height:

#The volume of the beam can then be calculated as:

Hence, the beam's volume is 
Answer:
-5/9
Step-by-step explanation:
also for this one, you have to put x as 3, y as 4, and z as 1
4/3(3)-1
=4/9-1
=4/9-9/9
=-5/9
hope this helps xD
Answer:

Step-by-step explanation:
Given


Required
Determine 
The implication of the question is to solve for 
Given that
and 
would be


Collect Like Terms


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Collect Like Terms

