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dlinn [17]
3 years ago
11

A coach decides to choose 3 out of 5 athletes to compete in a race. How many different ways can the coach choose athletes? Ident

ify if the situation involves combinations or permutations. A 10; PErmutations B; 20 Combinations C; 20 Permutations D; 10 Combinations
Mathematics
1 answer:
gtnhenbr [62]3 years ago
5 0

Answer:

20 combination

Step-by-step explanation:

\frac{3*2*1}{6*5*4*3*2*1} =\frac{6}{120} =20

It does not have to be arranged or in a circle

You might be interested in
The value of a car with an initial purchase price of $15,250 depreciates by 16% per year. How much is the car worth after 6 year
Scrat [10]

Answer:

$13842.43

Step-by-step explanation:

Given data

Value of car=$15,250

Rate of depreciation= 16%

Time = 6 years

We can use the exponential function below to model the value of the car after 6 years

v(t)= a(r)^x

But r= 1-0.016----------Because the value is depreciating

a=15,250  

r=0.016  

x=6

Substitute

v(t)= 15250(1-0.016)^6

v(t)=  15250(0.984)^6

v(t)=  15250*0.9077

v(t)= $13842.43

Hence the value will be $13842.43 after 6 years

8 0
3 years ago
Evaluate the expression when c=-6 <br> c^2+7c-5
xz_007 [3.2K]
 -5.16666667
first you have to subtract c from both sides.
0=-6^2+6c-5
0=36+6c-5
0=31+6c
then subtract 31 from both sides.
-31=6c
then -31 divided by 6
8 0
4 years ago
what is the ratio of videos that are dramas to videos that are not dramas? is this a part to part or part to whole ratio?
ser-zykov [4K]
// I am NOT sure about this, but I think it's part to part.

If it was part to whole ratio it will be out of total number of videos.
like ratio of videos that are drama to total videos.....
or ratio of videos that are not drama to total videos.....

You are talking part of each ratio and combining to a different one, so I think it's part to part.

//Again I am not sure about this. But kinda make sense.
6 0
3 years ago
3,394 divided by 42
almond37 [142]

Answer:

80.80

Step-by-step explanation:

3394/42 simplified would be 1697/21

as a mixed form it would be 80 and 17/21

As a decimal, 80.809...

Hope this helps :)

6 0
4 years ago
The area of a rectangular table is given by the trinomial x^2+7x-30. What are the possible dimensions of the rectangle? Use fact
ArbitrLikvidat [17]
A table will have a length and width, so the area will be just that, the product of those two factors, so in short, simply factor the area of x²+7x-30.

now, if we do a "prime factoring" of 30, we get 2*3*5, and we can mix them as 2*5 and 3, to get the factors of (x² + 10)(x²-3).
7 0
3 years ago
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