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sammy [17]
3 years ago
9

There are 12 people in a class. 10 are randomly chosen. How many possible combinations are there?

Mathematics
1 answer:
Mazyrski [523]3 years ago
3 0

long way

12 x 11 x 10 x 9 x 8 x 7 x6 x5 x4 x3x2/ 10x9x8x7x6x5x4x3x2x


but you can shorten that by crossing out identical numbers so you get 12 x 11

12 x 11 = 132 combinations

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henry can write 5 pages of his novel in 3 hours at this rate ,how many pages can Henry write in 8 hours
Svetllana [295]

Divide 5 by 3, he can write 1.66 pages an hour

1.66x8=13.33

Your answer would be 13

4 0
3 years ago
Classifying Quadrilateral
Alexxx [7]
Top right would be rhombus
3 0
3 years ago
Read 2 more answers
Evaluate (2-3) (4) - 9 -3.<br> -7<br> I<br> 11<br> 4
Delicious77 [7]

Answer:

-16

Step-by-step explanation:

8 0
3 years ago
Help me please! If f(x) varies directly with x2 and f(x)=10 when x=−4, what is the value of f(x) when x = 3?
exis [7]

Answer:

the answer is d becaus of it's creation

6 0
3 years ago
What three consecutive integers equal -87?
olchik [2.2K]

Answer:

What three consecutive integers have a sum of 87? Which means that the first number is 28, the second number is 28 + 1 and the third number is 28 + 2. Therefore, three consecutive integers that add up to 87 are 28, 29, and 30. We know our answer is correct because 28 + 29 + 30 equals 87 as displayed above.

Step-by-step explanation:

Consecutive integers are as simple as 1, 2, 3!  

Integers are consecutive if one follows another.  How do we "jump" from one integer to the next?  We add 1, right?  7, 8 and 9 are three consecutive integers.  Add one to 7 to get 8 and add one more to get 9.

Now lets think about this in algebraic terms.  Lets name these consecutive integers , x, y and z.  

The problem tells us that their sum is -87.  (Recall, "sum" is just a fancy word for the answer when we add.)

x+y+z = -87  

Here is the trick!  We need to rewrite this equation so that we have only one variable.  Easy!

y is one more that x, so y= x+1

And z is one more than y, so z= y+1.  But y is also equal to (x+1)!  So z=y+1=(x+1)+1=x+2

Now we have a problem that we can solve!  x+(x+1)+(x+2)=-87.  

Combining term.:  3x+3=-87  

Subtract 3 from both sides of the equation:  3x=84

Divide each side of the equation by 3:  x=28

We have solved for x, but we are not done!  We need to find y and z.  I know you can do this.  Remember y is one more than x and z is one more than y.

Check your work!  Make sure these three consecutive numbers do in fact add up to -87.

4 0
2 years ago
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