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zheka24 [161]
1 year ago
5

9х2 - 2x – 1 = 0

="2x { }^{2} - 2x - 1 = 0" alt="2x { }^{2} - 2x - 1 = 0" align="absmiddle" class="latex-formula">

Mathematics
1 answer:
skad [1K]1 year ago
7 0

Evaluate the value of x by using the quadratic formula.

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Step-by-step explanation:

9+10=19.

Replace the 0 in the ten with the 9.


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Explain how I would use Distributive Property (GCF) to factor the following expression: 4m + 16
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So we want to find the surface area of this pyramid. Finding the surface area of a 3D shape is essentially finding the area of all its sides and adding them together.

What we're going to have to do here is find the area of the base of the pyramid, which is basically a square, and find the area of all four sides of the pyramid, which are triangles.

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Formula for area of a triangle: (base × height) ÷ 2

First we will find the area of the base:

l × w = A

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8 × 8 =

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(We have our answer, dont forgot to write your units.)

So we've figured out the area of the base. Now onto the triangles:

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Now we've found the area of the base of the pyramid and one of the sides of the pyramid, but we're almost done! There's four sides to the pyramid, they're all the same. So since we found the area for one, we can multiply that by 4 to find the area of all sides added together:

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The surface area of the pyramid is 160m^2(square meters or meters squared)

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