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Maurinko [17]
3 years ago
13

This problem is only for smart kids, all people who dont do it r babies

Mathematics
1 answer:
Phantasy [73]3 years ago
3 0

Answer:

46

Step-by-step explanation:

∠DAC ≅ ∠ACB because they are opposite interior angles where transversal AC crosses parallel lines BC and AD.

∠DAC ≅ ∠CAB because they are corresponding angles of the similar triangles ΔABC and ΔACD.

Hence ∠ACB ≅ ∠CAB and ΔABC is isosceles with side lengths both being 9. The corresponding side lengths of ΔACD are 12, meaning the base of ΔABC, segment AC, is 12. The scale factor of ΔACD to ΔABC is then 12:9 = 4:3, so the base AD of ΔACD is (4/3)×12 = 16.

So, the side lengths of the trapezoid are ...

  • AB = 9
  • BC = 9
  • CD = 12
  • DA = 16

and the perimeter is 9 +9 +12 +16 = 46 units.

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You can express the edge lengths in terms of "cubes" or you divide the total volume by the volume of a cube. It works either way.

Edge lengths are
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In cubic inches, the volume is
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The volume of a 1/4-in cube is (1/4 in)^3 = 1/64 in^3.
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3 years ago
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\Large  \boxed{x_1=\frac{9+\sqrt{51} }{3}  \ \  ;  \ \ x_2=\frac{9-\sqrt{51} }{3} }

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Answer: The price of each small box is $4.8  and the price of each large box is $10.8.

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