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Alla [95]
3 years ago
6

In how many ways can 4 people be chosen and arranged in a straight line if there are 13 people from whom to choose?

Mathematics
1 answer:
solong [7]3 years ago
7 0

Answer:

17160

Step-by-step explanation:

Total number = n = 13

Number required = r= 4

If the number required does not have a specific order then combinations is chosen.

If a specific arrangement is required then permutations is used.

Here a  specific arrangement is mentioned therefore

13P4= 17160

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The four hand of a clock moves from 12 to 5 o'clock through how many degrees does it move?
julsineya [31]
To find the answer you have to first find how many degrees are there in between each number in the clock. the clock is 360°degrees and there are 12 numbers marked in a clock., so you have to divide 360 by 12 to get the number of degrees in between each number,
360°÷12=30° so there are 30°degrees between each number. 

if a clock hand moves from 12 to 5, it pass 5 numbers, so to get your final answer you have to multiply 30° by 5=150°.

so your answer is 150°degrees.
hope you can understand what i said. :)
8 0
3 years ago
Please help!!<br> I don’t know what to do
ira [324]

Answer:

x = 14.4

Step-by-step explanation:

Similar means that the figures are proportional to each other. Because of this, we can form a problem. \frac{9}{5} (the short side lengths) = \frac{x}{8} (the long side lengths). Now we can solve this by cross-multiplying. If we multiply 9 · 8 we get 72, and 5 · x is 5x. 72 = 5x. Now divide both sides by 5. 72 ÷ 5 = 14.4. Therefore, x should be equal to 14.4. Does this make sense?

6 0
3 years ago
Jennifer $12 to spend on lunch and roller rink. Admission to the roller rink is $5.75 Jennifer estimates that she can buy a larg
den301095 [7]
She may or may not because it depends on how much is the food and drink
6 0
3 years ago
Read 2 more answers
One angle of an isosceles triangle measures 64°. Which other angles could be in that isosceles triangle? Choose all that apply.
konstantin123 [22]

Answer:

64 and 52 or 58 and 58

Step-by-step explanation:

All the angles have to add up to 180 and 2 angles need to match

6 0
3 years ago
PLEASE HELP!!
statuscvo [17]

Answer:

76

Step-by-step explanation:

okay so 13=13 d = t

13×d = t

13×6 = 76

8 0
2 years ago
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