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20 and the vertex of the parabola is at (3, 20)
An icosagon is a 20 sided polygon that has 20 vertices which is the plural of vertex
Slope= -2/5 y-intercept is 20 x-intercept is 50
-5x2 + 20x - 13 describes a parabola, and you can find it's vertex in various ways. To find it using calculus, you can simply take it's derivative and solve for 0: f(x) = -5x2 + 20x - 13 f'(x) = -10x + 20 Let f'(x) = 0, then: 0 = -10x + 20 x = 2 Then simply plug the x value into the original equation: f(x) = -5 * 22 + 20 * 2 - 13 = -20 + 40 - 13 = 7 So the vertex of this parabola is at the point (2, 7). To solve it using strictly algebra, you can do it by expressing it as a value of y, and then rearranging accordingly: y = -5x2 + 20x - 13 y = -5(x2 - 4x) - 13 y = -5(x2 - 4x + 4 - 4) - 13 y = -5(x2 - 4x + 4) + 20 - 13 y = -5(x - 2)2 + 7 From which we can see that the vertex happens at the point (2, 7)
If you mean: -5x+2y = 20 then the x intercept is -4 and the y intercept is 10
20 and the vertex of the parabola is at (3, 20)
An icosagon is a 20 sided polygon that has 20 vertices which is the plural of vertex
20 sided ( or facets) vertex (12 evenly spaced corners)
Slope= -2/5 y-intercept is 20 x-intercept is 50
-5x2 + 20x - 13 describes a parabola, and you can find it's vertex in various ways. To find it using calculus, you can simply take it's derivative and solve for 0: f(x) = -5x2 + 20x - 13 f'(x) = -10x + 20 Let f'(x) = 0, then: 0 = -10x + 20 x = 2 Then simply plug the x value into the original equation: f(x) = -5 * 22 + 20 * 2 - 13 = -20 + 40 - 13 = 7 So the vertex of this parabola is at the point (2, 7). To solve it using strictly algebra, you can do it by expressing it as a value of y, and then rearranging accordingly: y = -5x2 + 20x - 13 y = -5(x2 - 4x) - 13 y = -5(x2 - 4x + 4 - 4) - 13 y = -5(x2 - 4x + 4) + 20 - 13 y = -5(x - 2)2 + 7 From which we can see that the vertex happens at the point (2, 7)
Dodecahedrons are a shape with 12 faces, 30 edges and 20 vertices.
Assuming that you meant "x - 4y = 20", the x-intercept is x=20, and the y-intercept is y=-5.
If you mean: -10x-10y = -20 then x intercept is at (2, 0) and y intercept at (0, 2)
If you mean: -5x+2y = 20 then the x intercept is -4 and the y intercept is 10
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The x intercept is the point where y = 0, the y intercept is the point where x =0: For the x intercept: 5x + 2y = 20, but y = 0 => 5x + 0 = 20 => x = 20/5 = 4. So the x intercept is at (4, 0). For the y intercept: 5x + 2y = 20, but x = 0 [The rest of the calculation is left as an exercise for the reader.]