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tatyana61 [14]
3 years ago
13

Find the value of 9!/ (9-2)!

Mathematics
1 answer:
dem82 [27]3 years ago
5 0

Answer:

<h2>72</h2>

Step-by-step explanation:

n!=1\cdot2\cdot3\cdot...\cdot n\\\\\dfrac{9!}{(9-2)!}=\dfrac{9!}{7!}=\dfrac{7!\cdot8\cdot9}{7!}\qquad\text{cancel}\ 7!\\\\=8\cdot9=72

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The midpoint of the line segment from P1 to P2 is (-6,5). If P1 = (-7,8), what is P2?
kipiarov [429]
You can determine midpoint by
x-midpoint = (x₁ + x₂)/2
y-midpoint = (y₁ + y₂)/2

Given from the question
x-midpoint = -6
x₁ = -7
y-midpoint = 5
y₁ = 8

Asked from the question
(x₂, y₂)

Solution
Find x₂, input the value of x₁ and x-midpoint to the formula
(x₁ + x₂)/2 = x-midpoint
(-7 + x₂)/2 = -6
-7 + x₂ = -6 × 2
-7 + x₂ = -12
x₂ = -12 + 7
x₂ = -5

Find y₂, input the value of y₁ and y-midpoint to the formula
(y₁ + y₂)/2 = 5
(8 + y₂)/2 = 5
8 + y₂ = 5 × 2
8 + y₂ = 10
y₂ = 10 - 8
y₂ = 2

Answer
P₂ = (-5,2)
5 0
3 years ago
What is the x of 3x45=?
vichka [17]

Answer: 135

Step-by-step explanation: 3x45=135

5 0
3 years ago
Read 2 more answers
Please help me i have been trying this for so long.
andre [41]

Answer:

The value of a is 101°, b is 79°, c is 83° and d is 97°

7 0
3 years ago
The area width is 9ft the total is 27ft
Mashutka [201]

Answer:

3ft

Step-by-step explanation:

because 9 times 3 equal 27

3 0
3 years ago
Help me guys it is homework pleased ⇄ ∛
VashaNatasha [74]

Answer:

I haven't done these in 2 years and I'm not sure if I remember things correctly but here's what I would put down.

5) No, it is not because the sizes of each section are not even.

6) Yes, this is fair since there are a even chance of getting each number.

7) 3 out of 25 or 3/25

8) The bag with 250 colored tiles would give him a less chance of picking a blue tile. In the first bag, there is a 40% chance that Greg would pick a blue tile while the second bag, he would have a 30% chance of picking a blue tile. To get these percentages, I divided the the amount of blue tiles in the bag by the total amount of tiles.

Explantion for question 8: 10 blue tiles in a bag of 25 so you would do 10/25 which is .4 and as a percentage it would be 40%. For the second question, 75 blue tiles out of 250 total so 75/250 and that would be .3 and as a percentage, it would be 30%. The "/" is a fraction bar and is sometimes used as a division symbol as well, just in case you don't know:)

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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