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yKpoI14uk [10]
3 years ago
6

I need help with this!

Mathematics
1 answer:
Colt1911 [192]3 years ago
8 0
The answer is 30 units
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Identify the postulate that proves the triangles are congruent.
Ratling [72]

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ASA

Step-by-step explanation:

Triangle ABD is congruent to triangle BDC by ASA because angle B in ABD  is 30 degrees. Then they give you BD which equals BD by the reflexive property. And finally angle D in ABD is also 30 degrees. In triangle BCD, angle B is 30 degrees, BD = BD, and angle D in BCD is 30 degress. So we have an angle (B), side (BD), and another angle (D)

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A room is 12cm long, 7cm wide and<br>4cm high find the area <br>the ceiling​
aksik [14]
Hey there!
I think that it safe to say that this room is a rectangular prism. Therefore, the top and bottom (floor and ceiling) have the same area. We see that our floor dimensions are 12 cm long and 7 cm wide. This also applies to the ceiling. Let’s take our two sides and multiply then to find our area.

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52 lbs is equal to how many kg
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1 lb  = 0.45 kg
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