2 years ago

Find cos -15 degrees

Mathematics

1 answer:

Kay [80]2 years ago

5 0

Answer:

-0.75968791285

Step-by-step explanation:

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Two corresponding sides of similar triangles have the lengths 6 cm and 16 cm. What is the ratio, expressed as a decimal?

Ira Lisetskai [31]

Answer: 16:81

Step-by-step explanation:

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2 years ago

The number of typing errors made by a typist has a Poisson distribution with an average of two errors per page. If more than two

wlad13 [49]

Answer: 0.6767

Step-by-step explanation:

Given : Mean = $\lambda=2$ errors per page

Let X be the number of errors in a particular page.

The formula to calculate the Poisson distribution is given by :_

$P(X=x)=\dfrac{e^{-\lambda}\lambda^x}{x!}$

Now, the probability that a randomly selected page does not need to be retyped is given by :-

$P(X\leq2)=P(0)+P(1)+P(2)\\\\=(\dfrac{e^{-2}2^0}{0!}+\dfrac{e^{-2}2^1}{1!}+\dfrac{e^{-2}2^2}{2!})\\\\=0.135335283237+0.270670566473+0.270670566473\\\\=0.676676416183\approx0.6767$

Hence, the required probability :- 0.6767

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3 years ago

The ratio of girls to boys in the photography club is 7 to 3. Which ratio could represent the members of the photography club?

MA_775_DIABLO [31]

Answer:

C) 21 girls : 9 boys

Step-by-step explanation:

You just have to compare the ratio you're given to the answers and see if the ratios from the answers match up to the ratio you were given. The reason C is the answer is because if you divide by 3 in the ration, it is the same as the ratio you were given, 7:3

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3 years ago

What is 2/3 as many as 18

vladimir1956 [14]

2/3 of 18 would be 12 if thats what youre asking. you would do 2/3 x 18

3 0

2 years ago

Read 2 more answers

Math question down below

kolbaska11 [484]

Answer:

314.961