<span>P(n,2)=42, find n.
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n!/(n-2)! = 42
n(n-1) = 42
n^2 -n - 42 = 0
(n-7)(n+6) = 0
Positive answer:
n = 7
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Cheers,
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Eliminate
multiply first equatin by -2
mulitply second by 3 and add them
-6x-14y=8
6x+15y=-6
add them
y=2
sub
3x+7(2)=-4
3x+14=-4
minus 14
3x=-18
divide 3
x=-6
(-6,2)
Answer:
d= -11
firstly you distribute, then you add the numbers, add 38 to both sides, simplify, divide both sides by the same factor, divide the numbers and that's the total
1. Corresponding Angles
2. Vertical Angles
3. Alternate Interior Angles
4. Supplementary angles
5. Same side interior angles, then vertical angles
Subtract x from both sides of the equation, this will allow only one side to have a variable.
