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3 years ago

I need help figuring out which ones are positive and what ones are positive?

Mathematics

1 answer:

aalyn [17]3 years ago

5 0

First one is positive second one is negative third one is negative fourth one is positive and the last one is positive

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How do i solve 4x-2y=8 solve for y ??

jenyasd209 [6]

8-4x/ -2 is the answer

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3 years ago

A certain circle can be represented by the following equation. x^2+y^2+18x+14y+105=0 What is the center of the circle? What is t

Gre4nikov [31]

Answer:

See below.

Step-by-step explanation:

Recall the equation for a circle:

$(x-h)^2+(y-k)^2=r^2$ , where (h,k) is the center and r is the radius.

We need to turn the given equation into the above format. We do this by completing the square.

First, group them:

$(x^2+18x)+(y^2+14y)=-105$

For the first section, complete the square for $x^2+18x$ :

$x^2+18x+81-81$

$(x+9)^2-81$

Do the same for the second:

$y^2+14y$

$y^2+14y+49-49$

$(y+7)^2-49$

All together:

$((x+9)^2-81)+((y+7)^2-49)=-105$

$(x+9)^2+(y+7)^2-130=-105$

$(x+9)^2+(y+7)^2=25$

The center is (-9,-7).

The radius is $\sqrt{25}=5$

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3 years ago

Which of these characteristics does a rhombus have

iren2701 [21]

Answer: opposite sides with equal length

Step-by-step explanation:

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Find the equation of the circle of the triangle, whose vertices are A(2,3) , B(5,4) and C(3,7)

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Answer:

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Step-by-step explanation:

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What is the value of the red dot on the number line below?

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Answer:

B, 9.625

Step-by-step explanation:

I know there's a more surefire method of doing this problem but since this is multiple choice, you can use process of elimination to solve it.

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