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3 years ago

When we prove a theorem using a proof, we start with a list of the ___ information.

Mathematics

1 answer:

xxTIMURxx [149]3 years ago

3 0

Answer:

Given

Step-by-step explanation:

When we prove a theorem using a proof, we start with a list of the given information.

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What is the length of CD ? In this diagram ABC EDC ?<br> Please help !!!!

n200080 [17]

Answer:
CD = x = 4 units

Explanation:
We are given that the two triangles are similar. This means that we can set the similarity proportionality as follows:
$\frac{BC}{CD} = \frac{CA}{CE} = \frac{AB}{ED}$

W e have:
BC = 20 - x
AC = 20
CD = x
CE = 5

Substitute in the above proportionality and solve for x as follows:
$\frac{20-x}{x} = \frac{20}{5} = 4$

4x = 20 - x
5x = 20
x = 4

Based on he above:
CD = 4 units
BC = 20 - x = 20 - 4 = 16 units

Hope this helps :)

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3 years ago

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Is this multiplication? Can you also help me with the answer!?

vredina [299]

Answer:

84,375 m^2

Step-by-step explanation:

We need to find the surface area of the pyramid. The pyramid can be divided into 4 triangles and one square (the bottom).

Area of a triangle is 1/2*b*h where b is the base of the triangle and h is the height.

Area of a square is length times width.

Total area = $4\times(\frac{1}{2}\times 225 \times 75)+225\times225 = 84375 m^2$

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2 years ago

In his Fourth of July speech, Douglass says that "above your national, tumultuous joy, I hear the wail of millions.” To what is

krok68 [10]

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3 years ago

Which sets of measurements could be the interior angle measures of a triangle? Select each correct answer.(There is more than on

Mumz [18]

The sum of the interior angles of a triangle is 180. Add the three measures given and if you get 180 then those can be the interior angles of a triangle.

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2 years ago

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Fill in the blank. If 9/24 = 3/x , then x is _____. PLS HELP!!

lina2011 [118]

Answer:

Step-by-step explanation:

9 /3 3

-- --

24 /3 8

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2 years ago