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zimovet [89]
3 years ago
14

Help! Simplify the expression 5⋅3−8÷2⋅3 .

Mathematics
1 answer:
rjkz [21]3 years ago
4 0
3 is the answer to this problem 
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Check the picture below.  So,the parabola looks like so, notice the distance "p". since the parabola is opening to the right, then "p" is positive, thus is 5.

\bf \textit{parabola vertex form with focus point distance}\\\\&#10;\begin{array}{llll}&#10;\boxed{(y-{{ k}})^2=4{{ p}}(x-{{ h}})} \\\\&#10;(x-{{ h}})^2=4{{ p}}(y-{{ k}}) \\&#10;\end{array}&#10;\qquad &#10;\begin{array}{llll}&#10;vertex\ ({{ h}},{{ k}})\\\\&#10;{{ p}}=\textit{distance from vertex to }\\&#10;\qquad \textit{ focus or directrix}&#10;\end{array}\\\\

\bf -------------------------------\\\\&#10;\begin{cases}&#10;h=3\\&#10;k=1\\&#10;p=5&#10;\end{cases}\implies (y-1)^2=4(5)(x-3)\implies (y-1)^2=20(x-3)&#10;\\\\\\&#10;\cfrac{1}{20}(y-1)^2=x-3\implies \boxed{\cfrac{1}{20}(y-1)^2+3=x}

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3 years ago
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