3 years ago

Which type of triangles can be formed by taking the cross-section of a cube?

Mathematics

1 answer:

Inessa05 [86]3 years ago

6 0

Answer:

2 Right Angled Triangles

Step-by-step explanation:

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Evaluate 7C3<br> OA) 25<br> O B) 45<br> OC) 35<br> OD) 20

SpyIntel [72]

Answer:

C) 35

Step-by-step explanation:

$^7C_3 \\ = \frac{7!}{3!(7 - 3)!} \\= \frac{7!}{3! \: 4!} \\ = \frac{7 \times 6 \times 5 \times 4!}{3 \times 2 \times 1 \times 4!} \\ = \frac{7 \times 6 \times 5 \times 4!}{3 \times 2 \times 1 \times 4!} \\ = 35 \\ \huge \red{ \boxed{ \therefore \: ^7C_3 = 35}}$