Answer:
c
Step-by-step explanation:
Answer:
2*2*9+4*12*3=36+144=180
Step-by-step explanation:
Answer:
solution
x<2,2x<-4,x-2<-4 are equvalent
but x-2<4 is not
16/c =8
That means 16 divided by same random number "c" makes the number 8. This also means that 8 times that random number you divided by makes 16.
Using this, you can rearrange the equation in various ways.
16/c =8
16 = c*8
c = 16/8
We only really need that last one, c = 16/8,
16/8 = 2
c = 2
One way to solve this would be to graph both y=x^2+6x+18 and y=2 - 1/x. If the graph of the polynomial is always higher up (above) the graph of y=2-1/x, that alone is sufficient cause to state that the poly is always greater than 2-1/x.
You could also do this algebraically: write the inequality
x^2+6x+18 > 2 -1/x. This can be rewritten as x^2+6x+18-2+1/x > 0, or
x^2+6x+16+1/x > 0
Try x=-3. Then 9-18+16-1/3 = 6 2/3, which is greater than 0.
Or you could graph x^2+6x+16+1/x by hand or on a calculator. Is the graph always above the x-axis? If so, <span>x²+6x+18 is always greater than 2-1/x.
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