What is 6a squared - 12a+36
2 answers:
6a² - 12a + 36 = 0 a = <u>-(-12) +/- √((-12)² - 4(6)(36))</u> 2(6) a = <u>12 +/- √(144 - 864)</u> 12 a = <u>12 +/- -√720 </u><u /><u /><u /> 12 a = <u>12 +/- -√(9 × 16 × 5)</u> 12 a = <u>12 +/- -√9 -√16 -√5</u> 12 a = <u>12 +/- (-3)(-4) -√5</u> 12 a = <u>12 +/- 12-√5</u> 12 a = <u>12 +/- 12(-2.236067978)</u> 12 a = <u>12 +/- (-26.83281573)</u> 12 a = <u>12 + (-26.83281573)</u> a = <u>12 - (26.83281573)</u> 12 12 a = <u>12 - 26.83281573</u> a = <u>12 + 26.83281573</u> 12 12 a = <u>-14.83281573</u> a =<u> 38.832815723</u> 12 12 -1.236067978 a = 3.236067978 <u />
6a²-12a+36= 6a²-12a=-36 Put the normal number on the other side to have the variables on one side, and the normal number on the other. Then group: = 36a-12a= -36 = 24a=-36 Then isolate a: = a=-36/24 Then simplify: =a = - 3/2 Hope this helps!
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Step-by-step explanation:
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Subtract the second equation from the 1st equation
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0.141
Step-by-step explanation:
There are ₇C₁ ways to choose 1 woman from 7.
There are ₅C₃ ways to choose 3 men from 5.
There are ₁₂C₄ ways to choose 4 people from 12.
So the probability is:
₇C₁ ₅C₃ / ₁₂C₄
7 × 10 / 495
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