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Valentin [98]
3 years ago
12

SOMEONE PLEASE HELP!!

Mathematics
2 answers:
lesya692 [45]3 years ago
8 0
First you need the size of an angle QPR = B = 180° - 123°
Lenght of QP = 10cm
QR = x
QP = r
x² = r² + r² - 2r² × cosB
Rina8888 [55]3 years ago
8 0

Answer:19.9

Step-by-step explanation:

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Follows are the solution to the given point:

Step-by-step explanation:

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                         = \begin{pmatrix} 8\\k-2\end{pmatrix} (\frac{1}{2})^{k-2} (\frac{1}{2})^{10-k} \ \ \ \ \ \ \ \ \  \ \\\\

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P(X=k | X \geq 2 ) =  \sum^{10}_{i=2}  \begin{pmatrix} 10-i\\ k-i\end{pmatrix} (\frac{1}{2})^{k-i} (\frac{1}{2})^{10-k}

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