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Murljashka [212]
3 years ago
6

Express .0000257 in scientific notation

Mathematics
1 answer:
sukhopar [10]3 years ago
6 0

Answer:

2.57 x 10^(-5)

Step-by-step explanation:

you have to move the comma sign in front of the first number considering 0 as a non-number.

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Help please, Mathematics! If there's a formula include that too, please
mario62 [17]

Answer:

24 Combinations Total

Step-by-step explanation:

METHOD 1 (no advanced math skills needed)

i. Number the friends: a, b, c, and d

ii. List all possible combinations...

  1. a b c d
  2. a b d c
  3. a c b d
  4. a c d b
  5. a d b c
  6. <u>a d c b</u>
  7. b a c d
  8. b a d c
  9. b c a d
  10. b c d a
  11. b d a c
  12. <u>b d c a</u>
  13. c a b d
  14. c a d b
  15. c b a d
  16. c b d a
  17. c d a b
  18. <u>c d b a</u>
  19. d a b c
  20. d a c b
  21. d b a c
  22. d b c a
  23. d c a b
  24. <u>d c b a</u>

To speed up the process instead of sitting here and listing 24 combinations, after two sections you can see that with friend "a" sitting all the way at the left there are six combinations and the same goes for friend "b". You can then multiply 6 (number of combinations with that friend <em>first</em>) and 4 (friends) to get 24.

METHOD 2

n! means the total number for permutations calculation (1 x 2 x ... until you reach <u><em>n</em></u><em> </em>) = 24

6 0
3 years ago
Aaron sold half of his comic books and then bought sixteen more. He now has 36. With how many did she begin?
Leni [432]

Answer:

40

Step-by-step explanation:

36-16 = 20

20*2=40

Lets check - half comic books - 40/2= 20 + 16 more = 36

4 0
3 years ago
Suppose the length of each side of a square is decreased by 4 feet. If the perimeter of the square is now 32 feet, what was the
Lady bird [3.3K]
Your answer if A. 48fr
4 0
3 years ago
Read 2 more answers
Mrdtxyxyx7rxrxrxy y uxrtxc5<br>​
DedPeter [7]

Answer:

waka waka

Step-by-step explanation:

7 0
2 years ago
Find the measure of angle T for the kite below
mezya [45]

Answer:

Angle T = 43°

Step-by-step explanation:

118+118+81 = 317

360-317 = 43

4 0
3 years ago
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