First, distribute -2 to all terms within the parenthesis
-2(2x) = -4x
-2(3) = -6
-4x - 6 + 11 = 11 - 3x
SImplify. Combine like terms
-4x (-6 + 11) = 11 - 3x
-4x + 5 = 11 - 3x
Isolate the x. Add 3x to both sides, and subtract 5 from both sides
-4x (+3x) + 5 (-5) = 11 (-5) - 3x (+ 3x)
-4x + 3x = 11 - 5
Simplify
-x = 6
Isolate the x. Divide -1 from both sides
-x/-1 = 6/-1
x = -6
-6 is your answer
hope this helps
2x+3 + 3x-4 + 2x+3 + 3x-4 = 78
10x -2 = 78
10x = 80
x=8
deck is 2(8)+3 by 3(8)-4, or 19 by 20
3.142 because if you put pi in a calculator, it will be 3.1425..., ad 3.142 is closer to 3.1425 than 3.141
Answer:
Below in bold.
Step-by-step explanation:
If we draw a line from top right vertex perpendicular to the bottom line we get a right triangle.
Height of this triangle = sqrt(5^2 - 3^2) = 4.
This is also the height of the polygon.
The polygon is a trapezium so:
Area of the polygon = 1/2(5 + 8) * 4
= 6/5 * 4
= 26 m^2.
The shape of the resulting cross section of the hexagonal pyramid in the diagram given is: a hexagon.
<h3>What is Hexagonal Pyramid?</h3>
A hexagonal pyramid is a pyramid with six lateral faces and an hexagonal base.
In the diagram, the plane cuts each of the lateral faces of the pyramid, giving a resultant shape that has 6 sides and angles, which is a hexagon.
Thus, the cross section shape is: a hexagon.
Learn more about hexagonal pyramid from:
brainly.com/question/457798
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