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Vinil7 [7]
3 years ago
8

A new drug on the market is known to cure 30% of patients with cervical cancer. If a group of 18 patients is randomly selected,

what is the probability of observing, at most, one patient who will be cured of cervical cancer?
Mathematics
1 answer:
Dima020 [189]3 years ago
5 0

Answer:

Probability cured of cervical cancer =  18C0 (0.30)⁰(0.70)¹⁸ +  18C1(0.30)(0.70)¹⁷

Step-by-step explanation:

Given:

Patients cured = 30% = 0.30

Number of patients (n) = 18

Probability cured of cervical cancer = P(X≤1)

Probability cured of cervical cancer  = P(X=0) + P(X=1)

Probability cured of cervical cancer =  18C0 (0.30)⁰(0.70)¹⁸ +  18C1(0.30)(0.70)¹⁷

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If the lengths of the legs of a right triangle are 5 and 12, what is the length of the hypotenuse?
sasho [114]

h - length of the hypotenuse

Use the Pyhagorean theorem:

h^2=5^2+12^2\\\\h^2=25+144\\\\h^2=169\to h=\sqrt{169}\\\\\boxed{h=13}

6 0
3 years ago
Word problem
MrRa [10]
They can bake 798 bagels in 21 hours. They can bake 38 bagels an hour.
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Which of the following is not equivalent to 4 1/4
Iteru [2.4K]
Can you show me a picture of the choices?
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3 years ago
A group of penguins swam 4/5 mile in 1/3 hour. Use the table to find how many miles the penguins swam in one hour if they swam a
Vinil7 [7]

Answer:

2.4 miles

Step-by-step explanation:

This is a simple ratio problem.

Penguins go 4/5 mile in 1/3rd hour. <em>So how many miles will they go in 1 hour? Let that be x:</em>

<em>\frac{\frac{4}{5}}{\frac{1}{3}}=\frac{x}{1}\\\frac{1}{3}x=\frac{4}{5}\\x=\frac{4}{5}*3=\frac{12}{5}</em>

<em />

<em>That is 12/5 miles or 2  2/5 miles</em>

<em>In decimal, that's </em><em>2.4 miles</em>

3 0
3 years ago
Read 2 more answers
Please help #12 10 points
eimsori [14]
1. add 40 to the 40 and 25
2. now you have
\frac{5x {}^{2} }{5}   = \frac{65}{5}
3. then you have
{x}^{2}  = 13
4. then square root
{x}^{2}  = 13
5.then round answer to nearest tenth which is
x = 3.61
3 0
3 years ago
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