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Ket [755]
3 years ago
7

Three different classes contain 20, 18, and 25 students, respectively, and no student is a member of more than one class. If a t

eam is to be composed of one student from each of these three classes, in how many different ways can the members of the team be chosen?
Mathematics
1 answer:
GaryK [48]3 years ago
4 0

Answer:

9000

Step-by-step explanation:

20 x 18 x 25

20 options for one member

18 options for another member

25 members for the last member

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Please answer correctly, will mark brainliest when available. thanks!
xz_007 [3.2K]

Answer: n=9

Step-by-step explanation:

5n-12=3n+6

move 12 to the other side

5n=3n+18

then move 3n to the other side

2n=18

n=9

7 0
3 years ago
Your favorite basketpall player made two-point duele goals and three-point field goals for a total of 34 points. He made 16 shot
Ira Lisetskai [31]

Answer:

it was just a joke chilll

3 0
3 years ago
N =64
faust18 [17]

Answer:

B.  1.70

Step-by-step explanation:

Given:

  • n=64
  • \overline{x}=65.1
  • \sigma=24
  • \textsf{h}_0:\mu=60
  • \textsf{h}_1:\mu\neq 60

\textsf{If }\: X \sim\textsf{N}(\mu,\sigma^2)\:\textsf{ then }\: \overline{X} \sim \left(\mu,\dfrac{\sigma^2}{n}\right) \implies Z=\dfrac{\overline{X}-\mu}{\sigma / \sqrt{n}} \sim \textsf{N}(0,1)

\textsf{then test statistic is}: \quad z=\dfrac{\overline{x}-\mu}{\sigma / \sqrt{n}}

Substituting the given values into the formula to find the test statistic z:

\begin{aligned}\implies z &=\dfrac{65.1-60}{24 / \sqrt{64}}\\\\&=\dfrac{5.1}{3}\\\\&=\dfrac{17}{10}\\\\&=1.7\end{aligned}

4 0
2 years ago
What is 0.0000000783 in scientific notation?
Schach [20]
That would be 7.83x10^-7 or 7.83x10^+7 hope that this helps some if not plz message me

8 0
3 years ago
A student earned a grade of 80% on a math test that had 20 problems.how many problems in this test did he student answer correct
Alinara [238K]
Multiply 20 by.80 to find the number of correct answers, which is 16.  
4 0
4 years ago
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