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Mathematics

1 answer:

ella [17]3 years ago

4 0

Answer:

Step-by-step explanation:

Don't trust these other answers it is 100% B.

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HELPPP HELP MEH plane intersects a prism parallel to the base of the prism. The cross section is a polygon with eight sides. The

Kobotan [32]

The minimum number of sides that the polygon at the base of the prism must has 4 sides.

<h3>What is a Polygon?</h3>

This refers to the plane figure in geometry that has three or more sides and angles in a finite straight line.

As we know the minimum number of sides a polygon does the base of the polygon have 4 side.

Now, as the plane intersect a prism parallel to base of the prism so the polygon of 5 sides will form then at least the base of the polygon will have 4 sides.

Learn more about polygons here:

brainly.com/question/1592456

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2 years ago

Use the quadratic formula to solve the equation: 8x(x - 2) - 20 = 5x(x - 4)

FromTheMoon [43]

Answer: $x = 2, -\frac{10}{3}$

Write the equation in standard form: $ax^{2} + bx + c = 0$ .

$8x(x - 2) - 20 = 5x(x - 4)\\\\8x^{2} - 16x - 20 = 5x^{2} - 20x\\\\3x^{2} - 16x - 20 = -20x\\\\3x^{2} + 4x -20 = 0$

Use the quadratic formula. <em>(+-) = </em>±

$\frac{-b (+-) \sqrt{b^{2} - 4ac } }{2a}$

Substitute in the values, where a = 3, b = 4, and c = -20, and simplify.

$\frac{-4(+-)\sqrt{(4)^{2} - 4(3)(-20)} }{2(3)} \\\\\frac{-4(+-)\sqrt{16 + 240} }{6}} \\\\\frac{-4(+-)\sqrt{256} }{6} \\\\\frac{-4(+-)16}{6} \\\\\frac{-4 + 16}{6}, \frac{-4 - 16}{6} \\\\\frac{12}{6}, \frac{-20}{6} \\\\2, -\frac{10}{3}$