I'm stuck on this problem also

1 answer:

8 0

<span>The perimeter is 14.47

Since you have 3 vertices, the polygon you have is a triangle. The sides of the triangle will be XY, XZ, and YZ. Just use the pythagorean theorem to calculate the length of each side and then add the lengths together for the result. Side XY = sqrt( (-1-3)^2 + (3-0)^2) = sqrt(16+9) = sqrt(25) = 5 Side XZ = sqrt ( (-1-(-1))^2 + (3-(-2))^2) = sqrt(0+25) = sqrt(25) = 5 Side YZ = sqrt( (3-(-1))^2 + (0-(-2))^2) = sqrt(16 + 4) = sqrt(20) = 4.47 Now add the length of each side together 5 + 5 + 4.47 = 14.47</span>

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VashaNatasha [74]

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2 years ago

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ExtremeBDS [4]

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Use the quadratic formula

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√

x=\frac{-{\color{#e8710a}{b}} \pm \sqrt{{\color{#e8710a}{b}}^{2}-4{\color{#c92786}{a}}{\color{#129eaf}{c}}}}{2{\color{#c92786}{a}}}

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Once in standard form, identify a, b, and c from the original equation and plug them into the quadratic formula.

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x^{2}+5x-2=0

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a={\color{#c92786}{1}}

a=1

b={\color{#e8710a}{5}}

b=5

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c={\color{#129eaf}{-2}}

c=−2

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⋅

(

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√

⋅

Step-by-step explanation:

this should help

8 0

3 years ago

Read 2 more answers

Which statement correctly describes a net?

charle [14.2K]

<h2>Answer:</h2>

A) A net is a two-dimensional pattern for a solid.

<h2>Step-by-step explanation:</h2>

In fact, a net is a two-dimensional pattern for a solid. But what is a solid? They are three-dimensional shapes. Prisms, cubes, pyramids, among others, are examples of solids. For example, the first figure below is a net because is a two dimensional patter for a pyramid which is shown in the second figure. As you can see, the first figure is a two-dimensional patter for this three-dimensional shape. Hence, by unfolding the pyramid we get the net or, in other word, by folding the net we get the pyramid.