Answer:
Step-by-step explanation:
5x+4y=-30 ....(1)
3x – 9y=-18....(2)
divid (2) by : 3
x -3y = -6 so x = 3y - 6....(*)
put this value for x in (1) : 5(3y - 6 ) +4y = - 30
15y - 30 +4y = - 30
19y = 0 so : y = 0 put this value in (*) : x = 3(0) - 6 .... x = - 6
Answer:
The total cost to install the 1,200 ft of the pipe is $21000.
Step-by-step explanation:
Consider the provided information.
You buy 900 ft pipe with a cost of $15 per foot and the remaining 300 ft pipe with a cost of $25 per foot.
Therefore, the total cost is:
Hence, the total cost to install the 1,200 ft of the pipe is $21000.
105 Animals....You know that because when you add together the head & feet that's adding all the animals together to get the total number of animals
12x+9p+17
All that you need to do is combine like terms
Answer:
The answers I have come are as follows.
-26
-14
-4
16