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mojhsa [17]
2 years ago
9

There are nine students in the chess club the club moderator select three of them to go to a chess tournament and how many ways

can she choose three of the nine students
Mathematics
2 answers:
Solnce55 [7]2 years ago
5 0

Answer:

84

Step-by-step explanation:

umka2103 [35]2 years ago
3 0

Answer:

apex: 84

Step-by-step explanation:


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Vera_Pavlovna [14]
Use long multiplication to evaluate. 
95.928
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2 years ago
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Eli, Freda and Geoff were given £800 to share in the ratio of their ages.
algol13
First, we are going to find the sum of their age. To do that we are going to add the age of Eli, the age Freda, and the age of <span>Geoff:
</span>9+13+18=40
The combined age of Eli, Freda, and Geoff is 40, so the denominator of each ratio will be 40.

Next, we are going to multiply the ratio between the age of the person and their combined age by <span>£800:
For Eli: </span>\frac{9}{40} *800=180
For Freda: \frac{13}{40} *800=260
For Geoff: \frac{18}{40} *800=360
<span>
We can conclude that Eli will get </span>£180, Freda will get £260, and Geoff will get <span>£360.</span>
4 0
2 years ago
50 points decreased by 26% is how many points?
vampirchik [111]
The first one is 13 points and the 2nd one is 8. I'm pretty sure, hope this helps! :)
6 0
2 years ago
A rural mail carrier logged the mileage on the odometer at the start of the mail route as 31,500 miles. After 6.5 hours, the car
disa [49]

Answer:

Step-by-step explanation:

Average speed = total distance / total time taken

Average speed is the total distance traveled divided by the total time taken

The carrier first odometer route is

d_1 = 31,500 miles

On return of the truck, the odometer reads

d_2 = 31,713 miles

The total time taken is 6.5 hours on return

Then,

Average Speed = total distance / total time.

A.V = (d_1 + d_2) / t

A.V = (31,500 + 31713) / 6.5

A.V = 63213 / 6.5

A.V = 9725.1 mile per hour

A.V = 9725.1 mph

3 0
2 years ago
The area of the trapezoid is 24 and the bases are 3 and 5. find the height. 3 3.2 6
lorasvet [3.4K]
<span>1. To solve this problem you must apply the formula for calcúlate the area of a trapezoid, which is shown below: 
 
 A=(B+b)h/2
 
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 B is the larger base </span>of the trapezoid <span>(B=5).
 b is the smaller base </span>of the trapezoid<span> (b=5).
 h is the height </span><span>of the trapezoid.
 
 2. You must clear "h" from the formula:
</span><span> 
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</span> 2A=<span>(B+b)h
</span> h=2A/<span>(B+b)
</span><span> 

  3. When you susbtitute the values into </span> h=2A/(B+b), you obtain:
 
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</span><span> h=2(24)/(5+3)
 h=48/8
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</span>
6 0
2 years ago
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