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3 years ago

20 POINTS!

Mathematics

2 answers:

tatuchka [14]3 years ago

7 0

I think it was D I dont completely know but theres a 25% chance its D

nataly862011 [7]3 years ago

6 0

Answer:

B. x-1/15x

Step-by-step explanation:

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A. GIVE AN EXAMPLE OF THE FOLLOWING AROUND YOUR HOME POINTS 1. 2. 3. 4. LINE /RAY/SEGMENT 5. 6. 7. 8. PLANE 9. 10.

pickupchik [31]

Sorry but I’m lost what are you talking about

5 0

3 years ago

Find out the number of combinations and the number of permutations for 8 objects taken 6 at a time. Express your answer in exact

umka2103 [35]

Solution:

The permutation formula is expressed as

$\begin{gathered} P^n_r=\frac{n!}{(n-r)!} \\ \end{gathered}$

The combination formula is expressed as

$\begin{gathered} C^n_r=\frac{n!}{(n-r)!r!} \\ \\ \end{gathered}$

where

$\begin{gathered} n\Rightarrow total\text{ number of objects} \\ r\Rightarrow number\text{ of object selected} \end{gathered}$

Given that 6 objects are taken at a time from 8, this implies that

$\begin{gathered} n=8 \\ r=6 \end{gathered}$

Thus,

Number of permuations:

$\begin{gathered} P^8_6=\frac{8!}{(8-6)!} \\ =\frac{8!}{2!}=\frac{8\times7\times6\times5\times4\times3\times2!}{2!} \\ 2!\text{ cancel out, thus we have} \\ \begin{equation*} 8\times7\times6\times5\times4\times3 \end{equation*} \\ \Rightarrow P_6^8=20160 \end{gathered}$

Number of combinations:

$\begin{gathered} C^8_6=\frac{8!}{(8-6)!6!} \\ =\frac{8!}{2!\times6!}=\frac{8\times7\times6!}{6!\times2\times1} \\ 6!\text{ cancel out, thus we have} \\ \frac{8\times7}{2} \\ \Rightarrow C_6^8=28 \end{gathered}$

Hence, there are 28 combinations and 20160 permutations.

7 0

1 year ago

I need help please will mark the brainliest

jok3333 [9.3K]

Answer:

i cant seee the picture

Step-by-step explanation:

can u retake it

8 0

3 years ago

I need answers anyone help

GalinKa [24]

First one single solution second no solution 3rd one single forth one infinity and last 2 are single and infinity

7 0

3 years ago

Please help me on this

taurus [48]

Answer:

gshwhsye

Step-by-step explanation:

gshshhshshshjsjsjsj

8 0

3 years ago