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3 years ago

four students have to give a speech in class today. In how many different orders can they give their speeches?

Mathematics

1 answer:

bulgar [2K]3 years ago

5 0

Answer:

There are 24 possible outcomes.

Step-by-step explanation:

1. 1-2-3-4

2. 1-4-3-2

3. 1-4-2-3

4. 1-2-4-3

5. 1-3-2-4

6. 1-4-3-2

7. 2-4-3-1

8. 2-1-3-4

9. 2-1-4-3

10. 2-4-1-3

11. 2-3-1-4

12. 2-3-4-1

13. 3-2-1-4

14. 3-2-4-1

15. 3-1-2-4

16. 3-1-4-2

17. 3-4-1-2

18. 3-4-2-1

19. 4-3-2-1

20. 4-3-1-2

21. 4-2-3-1

22. 4-2-1-3

23. 4-1-2-3

24. 4-1-3-2

Hope this helps!!

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The reasons as well as the answer

Radda [10]

Answer:

x = 46, y = 67

Step-by-step explanation:

x = ∠ AEC = 46 ( alternate angles )

Since Δ ACE is isosceles then the base angles are congruent, then

y = $\frac{180-46}{2}$ = $\frac{134}{2}$ = 67

4 0

3 years ago

Read 2 more answers

Irrational numbers cannot be written as a ratio…irrational means not rational. All fractions of integers are Rational.

TiliK225 [7]

with the exception of perfect squares, all square root of whole numbers are irrational, e.g. √5

how about this one:

2.34334333433334.... I am increasing the number of 3s each time, thus

creating a decimal which never ends and never repeats.

12.3456789101112131415.... can you see what I am doing?

will it ever end? will it ever repeat?

3 0

3 years ago

Which equation represents the line that passes through points (0,6) and (2,0)?

dybincka [34]

Answer:

D) y= -3x + 6

Step-by-step explanation:

y = mx + p

m = slope = (0-6)/(2-0) = -6/2 = -3

p = y-intercept = 6 ,because the line passes through points (0,6)

6 0

4 years ago

If u help me i will be very thankful!!

coldgirl [10]

Answer:

Step-by-step explanation:

$(a^{-2}\cdot 8^7)^2= \\\\a^{-2\cdot 2}\cdot 8^{7\cdot 2}= \\\\a^{-4}\cdot 8^{14}$

Therefore, the correct answer is C. Hope this helps!

6 0

3 years ago

How to find <br> X-7y=-21<br> 13x-7y=63

horrorfan [7]

Answer:

y = 4

x= 7

Step-by-step explanation:

First you would rearrange the first equation x-7y=-21 and make x the subject:

x= -21 +7y

Then substitute x into the 2nd equation to find y:

13x - 7y= 63

13(-21+7y) - 7y = 63

-273 + 91y -7y = 63

-273 + 84y=63

84y = 63 + 273

84y = 336

y = 4

Once you have y you can substitute this into any of the original equations to find x, for example:

x - 7y = -21

x - 7(4) = -21

x - 28 = -21

x = -21 +28

x= 7

8 0

3 years ago