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skelet666 [1.2K]
3 years ago
14

Solve for x and y by substitution method

Mathematics
2 answers:
-Dominant- [34]3 years ago
4 0

Answer:

15 and 4+4

Step-by-step explanation:

i think its correct

zubka84 [21]3 years ago
3 0

Answer:

A

Step-by-step explanation:

Because if you simplify you get that

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4 years ago
15 POINTS IF YOU CAN ANSWER THIS CORRECTLY!!!
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4√2x−8+4√2x+8=0

Simplifies to:

11.313708x=0

Let's solve your equation step-by-step.

11.313708x=0

Step 1: Divide both sides by 11.313708.

<u>11.313708x </u>

11.313708

=

<u>       0        </u>

11.313708

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4 years ago
Determine the minimum sample size needed in a presidential preference poll so that a
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3 years ago
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Unknown to a medical researcher, 6 out of 25 patients have a heart problem that will result in death if they receive the test dr
Fiesta28 [93]

Using the hypergeometric distribution, it is found that there is a 0.0002 = 0.02% probability that exactly 6 patients will die.

<h3>What is the hypergeometric distribution formula?</h3>

The formula is:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}

C_{n,x} = \frac{n!}{x!(n-x)!}

The parameters are:

  • x is the number of successes.
  • N is the size of the population.
  • n is the size of the sample.
  • k is the total number of desired outcomes.

The values of the parameters for this problem are:

N = 25, k = 6, n = 8.

The probability that exactly 6 patients will die is P(X = 6), hence:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}

P(X = 6) = h(6,25,8,6) = \frac{C_{6,6}C_{19,2}}{C_{25,8}} = 0.0002

0.0002 = 0.02% probability that exactly 6 patients will die.

More can be learned about the hypergeometric distribution at brainly.com/question/24826394

#SPJ1

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2 years ago
Write 81.4 as a fraction.
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407 over 5 but it also has to be simplified
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