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3 years ago

I need some help on the question below please, and thank you.

Mathematics

1 answer:

White raven [17]3 years ago

6 0

It might be 31 if you add all the numbers together but I'm not positive.

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Scorpion4ik [409]

Here's some help. Hope this works.

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3 years ago

0.7 is 10 times as much as

horsena [70]

0.7 is 10 times as much as 0.07. (0.07 x 10 = 0.7)

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3 years ago

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just olya [345]

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Step-by-step explanation:

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3 years ago

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Can someone help me with this question?

belka [17]

Answer:

The required probability is 0.0155.

Step-by-step explanation:

We are given that the one-year survival rate for pancreatic cancer is 20%.

Of 12 people diagnosed with pancreatic cancer at one hospital, 6 survived one year.

The above situation can be represented through binomial distribution;

$P(X=r) = \binom{n}{r} \times p^{r} \times (1-p)^{n-r} ; x = 0,1,2,3,......$

where, n = number of trials (samples) taken = 12 people

r = number of success = 6 survived

p = probability of success which in our question is probability of

one-year survival rate for pancreatic cancer, i.e; p = 20%

Let X = Number of people survived one year

So, X ~ Binom(n = 12 , p = 0.20)

Now, the probability that 6 survived one year is given by = P(X = 6)

P(X = 6) = $\binom{12}{6} \times 0.20^{6} \times (1-0.20)^{12-6}$

= $924 \times 0.20^{6} \times 0.80^{6}$

= 0.0155

5 0

3 years ago

58 - 5X = 30X - 75 need help please

Tju [1.3M]

Answer:

3.8

Step-by-step explanation:

$58-5x=30x-75$

Let's add 5x to both sides of the equation...

$58=35x-75$

Then, let's add 75 to both sides of the equation...

$133=35x$

Divide by the coefficient of x, (35)...

$x=3.8$

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3 years ago