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lisabon 2012 [21]
3 years ago
11

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Mathematics
2 answers:
vladimir1956 [14]3 years ago
8 0

Answer: 9

Step-by-step explanation:

When you multiply 9*9, you get 81 whose sum is 9 (8+1)

Likewise, 9*8=72( 7+2=9)

Andre45 [30]3 years ago
8 0

I am the number '9'

To prove:

On multiplying 9 with different numbers, the sum of the digits of its product is always 9. Let's see;

9 * 2 = 18

where (1 + 8 = 9)

Now, multiplying it by 3

9 * 3 = 27

where (2 + 7 = 9)

Similarly,

9 * 4 = 36

where (3 + 6 = 9)

9 * 5 = 45

where (4 + 5 = 9)

9 * 6 = 54

where (5 + 4 = 9)

9 * 7 = 63

where (6 + 3 = 9).

Thus, option b i.e. 9 is the correct answer.

Learn more about 'numbers' here:

brainly.in/question/24738334

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3 years ago
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The volume of a rectangular box is 2160 in cubes. It is 10 in. wide and 18 in. long. What is the height of the box?
MrMuchimi
Height=voulme/length and width 
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3 0
3 years ago
There are 11 women and 9 men in a certain club. If the club is to select a committee of 2 women and 2 men, how many different su
Lelechka [254]

Answer:

1980

We can choose 2 men from 9 in 36 in ways.

We can choose 2 women from 11 in 55 ways.

For any arrangement of 2 men there are 55 ways of combining them with 2 women => 55 * 36 = 1980 total ways.

If you're wondering how i got the numbers i used the combination formula:

C(n, k) = \frac{n!}{k!(n-k)!}

3 0
3 years ago
What is the equation of a circle with a center located at (-3, 4) and a diameter of 14?
AnnZ [28]

Answer: (x + 3)^2 + (y - 4)^2 = 49

Step-by-step explanation:

The equation of a circle given the center and radius: (x - h)^2 + (y - k)^2 = r^2

Given: center (-3,4) ; h = -3 and k = 4

diameter = 14

To find the radius: divide the diameter by 2 = 14/2 = 7 = r

Center: (-3,4) and radius: 7

Equation of a circle: (x - h)^2 + (y - k) ^2 = r^2

Substitute h = -3, k = 4, r = 7

(x - (-3))^2 + (y - 4)^2 = 7^2

Answer:

Equation of the circle: (x + 3)^2 + (y - 4)^2 = 49

7 0
3 years ago
Can some help me with this .
PtichkaEL [24]

Answer:

1. 169π ft²

2. 144π in²

3) 25π yd²

Step-by-step explanation:

1) π * 13²

π * 169

units = ft²

169π ft²

2) π * 12²

π * 144

units = in²

144π in²

3)π * 5²

π * 25

units = yd²

25π yd²

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

7 0
3 years ago
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