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yKpoI14uk [10]
3 years ago
11

Evaluate f(x) = -x to the second power + 1 for x = -3

Mathematics
1 answer:
professor190 [17]3 years ago
5 0
I think it's 4 Yeah 4 something like that
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A

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Go to the graph at 12 weeks and the line for Baby A is above Baby B.

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4 years ago
How do I use elimination for the equations-x+5y=20 and 12y= 2x+ 60?
Slav-nsk [51]

\left\{\begin{array}{ccc}-x+5y=20\\12y=2x+60&\text{subtract 2x from both sides}\end{array}\right\\\left\{\begin{array}{ccc}-x+5y=20\\-2x+12y=60&\text{divide both sides by (-2)}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}-x+5y=20\\x-6y=-30\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad-y=-10\to\boxed{y=10}\\\\\text{Put the value of y to the second equation:}\\\\x-6(10)=-30\\x-60=-30\qquad\text{add 60 to both sides}\\\boxed{x=30}\\\\Answer:\ \boxed{x=30\ and\ y=10\to(30,\ 10)}

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4 years ago
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20/100×40

=8

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