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Radda [10]
3 years ago
10

1.) There are 16 juniors and 8 seniors in the Chess Club. If the club

Mathematics
1 answer:
Lena [83]3 years ago
7 0

Answer:

1.) There are 16 juniors and 8 seniors in the Chess Club. If the club  members decide to send 9 juniors to a tournament, how many different  possibilities are there?  

(16 over 9) = 16!/(9!*7!) = 11440

2.) How many different ways can 3 cards be drawn from a deck of 52  cards without replacement?  

52*51*50 = 132600

3.) How many different ways can 3 cards be drawn from a deck of 52  cards with replacement?  

52^3 = 140608

4.) A corporation has 5 officers to choose from which 3 are selected  to comprise the board of directors. How many combinations are there?

(5 over 3) = 5!/(3! * 2!) = 10

5.) A combination lock has the numbers 1 to 40 on each of three  consecutive tumblers. What is the probability of opening the lock in  ten tries?

10/40^3 = 1/6400

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What is the best estimation of the equation 7/8 -6/11
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Answer:

125/88

Step-by-step explanation:

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Which set of ordered pairs gives the polygon shown?
makvit [3.9K]
The correct answer is B.

Explanation
Since each interval mark is 1/4 of a unit, we will write this as 0.25.  For the first point, 4 interval marks to the left of the y-axis makes it a negative number; 4(0.25) = 1; this makes the x-coordinate of this point -1.  2 interval marks above the x-axis makes it positive; 2(0.25) = 0.5; this makes the y-coordinate 0.5.  This makes the first ordered pair (-1, 0.5).

The second point is on the y-axis.  This makes the x-coordinate 0.  It is 5 intervals above the x-axis; this makes it positive.  5(0.25) = 1.25 will be the y-coordinate, making the point (0, 1.25).

The third point is 3 intervals to the right of the y-axis; this makes it positive, and 3(0.25)=0.75 for the x-coordinate.  It is 3 intervals below the x-axis; this makes it negative, and 3(0.25) = 0.75, making the y-coordinate -0.75.  This puts the third point at (0.75, -0.75).
7 0
3 years ago
Jill estimated she would spend $50.00 a month on clothing. However, at the end of the year she discovered she actually spent $71
RideAnS [48]
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5 0
2 years ago
Let v be a vector with initial point (-5, -11) and terminal point (6,2). What is v?
White raven [17]

Answer-The vector is

=

7

→

i

−

24

→

j

and the magnitude is

=

25

Explanation:

Let the point

A

=

(

−

2

,

7

)

and

B

=

(

5

,

−

17

)

Then,

−−→

A

B

=

(

5

−

(

−

2

)

−

17

−

7

)

=

(

7

−

24

)

The magnitude of

−−→

A

B

is

∣

∣

∣

∣

∣

∣

−−→

A

B

∣

∣

∣

∣

∣

∣

=

√

(

7

)

2

+

(

−

24

)

2

=

25

Step-by-step explanation:

4 0
3 years ago
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