I need help!! A regular heptagon is shown below. What is the value of x? *
1 answer:
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Given:
The graph of a system of equations.
To find:
The solution of the given system of equations.
Solution:
If a system of equations has two equations, then the intersection points of the graphs of these two equations are the solutions for the system of equations.
From the given graph it is clear that the graph of both line intersect each other at point .
Therefore, the solution is .
Answer:
a) The maximum amount of water the aquarium can hold is 1728 in³.
b) The cover has to be 624 in² big.
Step-by-step explanation:
a) The maximum volume of water that the aquarium can have is the same as the volume of the aquarium:
V=L×W×H=18 in × 8 in × 12 in= 1728 in³
b) The protective covering is used on the four walls of the aquarium. We have to find the areas of the four walls:
One of them is given by the multiplication of the width and the height:
A₁= W×H= 8 in × 12 in=96 in²
The other area is given by the multiplication of the length and the height:
A₂= L×H= 18 in × 12 in= 216 in²
As the fish aquarium is rectangular the area of the walls is given by:
=2×96 in²+2×216 in²=624 in²