3 years ago

Factor −3 out of −27a−12.

Mathematics

1 answer:

djyliett [7]3 years ago

7 0

Answer:

-3(9a + 4)

Step-by-step explanation:

Factor −3 out of −27a−12.... basically divide each term by -3

-3(9a + 4)... please check if by multiplying -3 you still get (-27a - 12)

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In one round robin chess tournament, 36 games were played. How many players entered in the tournament?

ICE Princess25 [194]

$\displaystyle
\binom{n}{2}=36\\\\
\dfrac{n!}{2!(n-2)!}=36\\
\dfrac{n(n-1)}{2}=36\\
n(n-1)=72\\
n^2-n-72=0\\
n^2-9n+8n-72=0\\
n(n-9)+8(n-9)=0\\
(n+8)(n-9)=0\\
n=-8 \vee n=9$

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Ulleksa [173]

Answer:

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Step-by-step explanation:

4 0

3 years ago

(7-b)+(3b+2)+(7-b)+(3b+2) Plz help me out I’m a lil stressed out with school

ankoles [38]

Answer:

4b+18

Step-by-step explanation: