A x 4 = 4 solve for a
2 answers:
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Answer:
volume will be equal to 5,655 ft³
Step-by-step explanation:
diameter of swimming pool = 40 ft
depth increases from east-west lines is from 2 ft to 7 ft
so the average depth of the swimming pool can be calculated by
hence average depth comes out to be 4.5 m
volume of water in the pool will be equal to the volume of the pool
volume =
=
= 5,654.86 ft³
volume will be equal to 5,655 ft³ approximately
Answer:
Step-by-step explanation:
[1] 2x + y = -1
[2] x - 2y = -8 <------- given linear equations
Graphic Representation of the Equations : ----> given in attatchment
y + 2x = -1 -2y + x = -8 < ----- point where they connect is shown in graph
Solve by Substitution :
// Solve equation [2] for the variable x
[2] x = 2y - 8
// Plug this in for variable x in equation [1]
[1] 2•(2y-8) + y = -1
[1] 5y = 15
// Solve equation [1] for the variable y
[1] 5y = 15
[1] y = 3
// By now we know this much :
x = 2y-8
y = 3
// Use the y value to solve for x
x = 2(3)-8 = -2
Solution :
{x,y} = {-2,3}
