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3 years ago

If ΔABC and ΔXYZ are similar, which must be true? A) BC YZ = AC YX B) BC YZ = BA XZ C) AC XZ = BC YZ D) AC XZ = BA XZ

Mathematics

2 answers:

Anarel [89]3 years ago

7 0

Answer: Option 'C' is correct.

Step-by-step explanation:

Since we have given that

ΔABC ~ ΔXYZ.

i.e. ΔABC and ΔXYZ are similar triangle.

then, their ratio of corresponding sides must be equal.

So, there is three possibilities:

$\frac{AB}{XY}=\frac{BC}{YZ}=\frac{AC}{XZ}$

Hence, Option 'C' is correct.

navik [9.2K]3 years ago

6 0

Answer: The correct awnser is A.

Step-by-step explanation:

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Answer:

a) correct option is

Poisson distribution is 6.2 and standard deviation is 2.49

b) probability for only 2 or less than 2 surgeries in a given day is 0.0536

Step-by-step explanation:

Given data:

mean number is given as 6.2

correct option is

Poisson distribution is 6.2 and standard deviation is 2.49

we know that variance is given as $\sigma^2 = mean = 6.2$

hence, standard deviation is given as $\sqrt{6.2} = 2.48998$

thus standard deviation is 2.49

correct option is

Poisson distribution is 6.2 and standard deviation is 2.49

b) probability for only 2 or less than 2 surgeries in a given day is

$P(X \leq 2) = P(X =0) + P(X =1) + P(X =2)$

$= \frac{e^{-6.2} 6.2^0}{0!} +\frac{e^{-6.2} 6.2^1}{1!} +\frac{e^{-6.2} 6.2^2}{2!}$

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= 0.0536

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3 years ago