10 books cost $30. To figure it out, it's just 3 times the number of books. XD
Answer:
dy=9-y
dx=x
Step-by-step explanation:
We know that
Any point <span>(x,y)</span> on the parabola is equidistant from the focus and the directrix
Therefore,
focus (0,4) and directrix of y=2
<span>√[<span>(x−0)</span></span>²+(y−4)²]=y−(2)
<span>√[x</span>²+(y-4)²]=y-2
x²+(y-4)²=(y-2)²
x²+y²-8y+16=y²-4y+4
x²=4y-12-----> 4y=x²+12----->y= (x²/4)+3
the answer is
y= (x²/4)+3
I hope this helps you
Area=width×length
Area=18×4
Area=72
Answer:
98.5537
Step-by-step explanation:
