X2+5x+y2-y=-2
X2+2*5x2+(5/2)^2-(5/2)^2+y2-2*y/2+(1/2)^2-(1/2)^2=-2
(x+5/2)^2+(y-1/2)^2-13/2=-2
(x+5/2)^2+(y-1/2)^2=9/2
So centre =(-5/2,1/2)
Radius=(9/2)^(1/2)

7 0

2 years ago

Which is the best definition of a trapezoid? A.a parallelogram that can have 2 equal sides B.a parallelogram with no equal sides

lina2011 [118]

D a quadrilateral with one pair of parallel sides

7 0

2 years ago

Which inequality is used to find the domain<br>

Igoryamba

<h3>Answer: Choice D. $5x-5 \ge 0$ </h3>

This is because we want to avoid having negative numbers under the square root. So we make the radicand to be 0 or larger.

The +1 at the end doesn't affect the domain.

4 0

2 years ago

A culture of 1.08×1015 bacteria is in petri dish A. A culture of 2.7×1011 bacteria is in petri dish B.

dalvyx [7]

<span> 1.08×10^15
------------------ = 0.4 x 10^4 = 4000
</span><span> 2.7×10^11

answer
4000 times greater</span>

3 0

2 years ago

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