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aliina [53]
2 years ago
7

12x² + 9x² = A. 21x²² B. 21x C. 22x² D. 22xA

Mathematics
2 answers:
mel-nik [20]2 years ago
6 0

Answer: A (if it's just a typo)   or   21x^{2}

Step-by-step explanation:

Since it's the same variable and same exponent, you just need to add the whole numbers and put the same variable and exponent.

12 + 9 = 21

21x^{2}

Gnesinka [82]2 years ago
3 0

Answer:

21x²

Step-by-step explanation:

hopefully A is a typo

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Alik [6]

Answer:

4/663 or .6%

Step-by-step explanation:

P(Queen) = 4/52 or 1/13

P(4) = 4/51 (51 cards because the first card drawn was not replaced)

multiply the probabilities together to get:

1/13 x 4/51 = 4/663

6 0
3 years ago
Didn't understand concept in this problem
Charra [1.4K]
<span>(n-2)180=sum of the interior angles. 

Where n=number of angles of a regular polygon.

(n-2)180=2340

divide both sides by 180 and get

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add 2 to both sides and get

n=15 Therefore, this polygon has 15 sides.</span>
6 0
3 years ago
Read 2 more answers
If x is a positive integer list the possible values of x
german

If the variable x is a positive integer, the list of possible values of x can be represented as; x >=1.

<h3>Positive integers</h3>

According to the question;

  • We are required to list the possible values of x provided the variable x is a positive integer.

On this note, the list of possible values of x is all numbers greater or equal to 1 in which case these numbers do not have a fractional component.

Read more on positive integers;

brainly.com/question/13292955

6 0
3 years ago
Can someone tell me what to write for part b ?!!!!
Sergeu [11.5K]
No, because if it was 2 gal. per min., then the first coordinates would be (1,2)
7 0
4 years ago
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Please explain the answer in simple terms. Will give brainliest for the best explanation and right answer.
Basile [38]

Answer:

1980 meters

Step-by-step explanation:

The speed is 330 m/s

The time is 6 second

330 m/s * 6 seconds

1980 meters

3 0
4 years ago
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