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3 years ago

X+y+z=2 2x+y-z=5 X-y+z=-2

Mathematics

1 answer:

Debora [2.8K]3 years ago

5 0

Answer:

x=2-y-z

x=5/2-y/2+z/2

x=-2+y-z

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Write the equation of a circle given the center (-4, 4) and raduis r = 5.

Len [333]

Answer:

A) $(x+4)^2+(y-4)^2=25$

Step-by-step explanation:

The equation of a circle is $(x-h)^2+(y-k)^2=r^2$ where $(h,k)$ is the center and $r$ is the radius. If $(h,k)\rightarrow(-4,4)$ and $r=5$ , then:

$(x-h)^2+(y-k)^2=r^2\\\\(x-(-4))^2+(y-4)^2=5^2\\\\(x+4)^2+(y-4)^2=25$

Therefore, the equation of the circle is $(x+4)^2+(y-4)^2=25$

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Step-by-step explanation:

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3 years ago

Can anybody tell me how to solve this

Lyrx [107]

The answer to your question is: Yes, someone undoubtedly can.

Although you haven't asked to be told or shown how to solve it, I'm here
already, so I may as well stick around and go through it with you.

The sheet is telling you to find the solutions to two equations, AND THEN
DO SOMETHING WITH THE TWO SOLUTIONS. But you've cut off the
instructions in the pictures, so all we have are the two equations, and
you'll have to figure out what to do with their solutions.

First equation:
 (2/5) x - 6 = -2
Add 6 to each side:
 (2/5) x = 4
Multiply each side by 5:
 2x = 20
Divide each side by 2 :
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Second equation:
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Multiply each side by 4 :
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Divide each side by -12 :
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3 years ago

Read 2 more answers

I only need number 1 i don’t understand.

valentinak56 [21]

Answer:

Step-by-step explanation:

in this problem there is A+b=15

A=9

B=12

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3 years ago