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DochEvi [55]
2 years ago
9

How many ways can you select a committee of 4 students out of 10 students?

Mathematics
1 answer:
Aleks04 [339]2 years ago
3 0

\binom{10}{4}=\frac{10!}{6!4!}=\frac{10(9)(8)(7)}{24}=10(3)(7)=\boxed{210}

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Leviafan [203]
45x97=4365 hours, number of hours multiply by n of enmp
8 0
3 years ago
By what percent will the product of two numbers change, if the first number increases by 70%, while the second number decreases
FinnZ [79.3K]

Answer:

2%

Step-by-step explanation:

Let x be the first number

It increases by 70 %

The new number is

m = x+ .70x

   = 1.7x

Let y be the second number

It decreases by 40 %

The new number is

n =y - .40 y

  = .6y


The product of the original numbers is xy

The product of the new number is

mn = (1.7x * .6y) = 1.02xy

The new number is larger than the old number so it is an increase.

Percent increase is  new - original divided by original  times 100%

Percent increase = (1.02 xy - xy)

                                -----------------  * 100%

                                 xy  

                           = .02 xy

                                ------- * 100 %

                                 xy  

                            = .02 * 100 %

                             = 2%



5 0
3 years ago
2) How many widgets (to the nearest tenth) can be produced by 360 workers in 20 hours?
White raven [17]

Answer:

Can you please explain more;)

Step-by-step explanation:

7 0
3 years ago
Harper had $35 in her purse and found x dollars more on the couch. Cole had $41 in his wallet and spent twice as much money as H
yanalaym [24]

Answer (x is the money Harper found):

  1. Equation: (35 + x) = (41 - 2x)
  2. Solution: x = 2

I hope this helps!

8 0
3 years ago
The classroom that collected 197 5/8 pounds of canned food for a food drive last year has collected 72 3/4 pounds so far this ye
vlabodo [156]

Answer:

6644

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
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