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Masja [62]
3 years ago
15

Evaluate k^2 − 2 k + 5 , when k = − 2

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
3 0

Answer:5

22x{2} -2(2)+5

Step-by-step explanation:

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From a group of 13 women and ​12 men, a researcher wants to randomly select 8 women and 8 men for a study. In how many ways can
Fantom [35]

The total number of ways the study can be selected is: 637065

Given,

Total number of women in a group= 13

Total number of men in a group = 12

Number of women chosen = 8

Number of men chosen = 8

∴ the total number of ways the study group can be selected = 13C₈ and 12C₈.

This in the form of combination factor = nCr

                                                     ∴ nCr = n!/(n₋r)! r!

13C₈ = 13!/(13 ₋ 8)! 8!

        = 13!/5!.8!

        = 1287

12C₈ = 12!/(12₋8)! 8!

        = 12!/5! 8!

        = 495

Now multiply both the combinations of men and women

= 1287 × 495

= 637065

Hence the total number of ways the study group is selected is 637065

Learn more about "Permutations and Combinations" here-

brainly.com/question/11732255

#SPJ10

4 0
2 years ago
HURRYYY!!! 20 POINTS AND BRAINLIEST IF CORRECT.
Gennadij [26K]

Its A i did the test

7 0
3 years ago
It costs $3.99 for 25 fl. Oz. Of detergent or $6.99 ffor fl. Oz. Which is a better buy
mash [69]

Answer: get the 25 fl .oz because it obviously cheaper than the a fl oz  


Step-by-step explanation:because  i would not pay $7.00 for a fl .oz

when u can just get 25 fl oz for $4.00

so just get the 25 its cheaper


5 0
4 years ago
3grade math help!!!
alekssr [168]
14+2(14)=42. this is the answer
7 0
3 years ago
Read 2 more answers
Solve this inequality.<br>7x + 2 &gt; 30<br>A.x 224<br>B.x &gt; 196<br>C.x 4<br>D.x &gt; 3​
Oliga [24]

Answer:

x > 4

Step-by-step explanation:

7x + 2 > 30

Subtract 2 from each side

7x + 2-2 > 30-2

7x > 28

Divide each side by 7

7x/7 > 28/7

x > 4

6 0
3 years ago
Read 2 more answers
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