3 years ago

Need help ASAP

Mathematics

1 answer:

Anton [14]3 years ago

4 0

A. 6(a+8)

B.4(1+ 9x)

C.(9m + 10) x 2

D. 3 (2x + 4y - 15z

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slavikrds [6]

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We have the formula of $^nC_r = \frac{n!}{r! (n-r)!}$

Now, it is given that $^8C_r = \frac{8!}{r! (8-r)!} = 28$ ........ (1)

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SIZIF [17.4K]

Answer 121°

Step-by-step explanation:

All triangles have an interior angle sum of 180.

From this you can subtract 103 and 18 to get 59.

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