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lilavasa [31]
2 years ago
10

Which number is composite? (9,5,11,2)​

Mathematics
2 answers:
Nana76 [90]2 years ago
6 0

Answer:

9

Step-by-step explanation:

3 x 3 = 9 :)

ankoles [38]2 years ago
3 0

Answer: 9

Step-by-step explanation:

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Solve the following equation:<br> 9n² - n - 2/3 = 0
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Answer:

see explanation

Step-by-step explanation:

Given

9n² - n - \frac{2}{3} = 0 ← multiply through by 3 to clear the fraction

27n² - 3n - 2 = 0 ← factoring

Consider the factors of the product of the n² term and the constant term which sum to give the coefficient of the n- term

product = 27 × - 2 = - 54 and sum = - 3

The factors are - 9 and + 6

Use these factors to split the n- term

27n² - 9n + 6n - 2 = 0 ( factor the first/second and third/fourth terms )

9n(3n - 1) + 2(3n - 1) = 0 ← factor out (3n - 1) from each term

(3n - 1)(9n + 2) = 0

Equate each factor to zero and solve for n

3n - 1 = 0 ⇒ 3n = 1 ⇒ n = \frac{1}{3}

9n + 2 = 0 ⇒ 9n = - 2 ⇒ n = - \frac{2}{9}

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3 years ago
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Step-by-step explanation: 60 square feet would be 8640.

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