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2 years ago

PLEASE HURRY!! TIMED!! WILL GIVE BRAINLIEST!!!

Mathematics

1 answer:

tensa zangetsu [6.8K]2 years ago

4 0

Answer:

2/3 +9.26 = 0.6666+9.26=rational

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-2x+2y=6<br> y=3 ft me after ill paypal u 252 622 0255

Katen [24]

Answer:

-2x +6 = 6

-2x = 6- 6

-2x =0

x = 0

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3 years ago

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Solve for z;<br><br>z/12 = 18/72

enot [183]

Answer:

Step-by-step explanation:

z/12=18/72 z/12=1/4 z=3

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2 years ago

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The table shows the precipitation in December, in inches, for Washington state from 2005 to 2013. What was the mean amount of pr

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2 years ago

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2 years ago

I need some help with math

Irina18 [472]

Answer:

$(y-7)^2+(x-2)^2=16$

and

$(x+2)^2+(y-15)^2 = 9$

Step-by-step explanation:

The standard equation of a circle is $(x-h)^2+(y-k)^2=r^2$ where the coordinate (h,k) is the center of the circle.

Second Problem:

We can start with the second problem which uses this info very easily.
(h,k) in this problem is (-2,15) simply plug these into the equation. $(x--2)^2+(y-15)^2=r^2$ .
We can also add the radius 3 and square it so it becomes 9. The equation.
This simplifies to $(x+2)^2+(y-15)^2 = 9$ .

First Problem:

The first problem takes a different approach it is not in standard form. But we can convert it to standard form by completing the square.
$y^2-14y+x^2-4x+37=0$ first subtract 37 from both sides so the equation is now $y^2-14y+x^2-4x=-37$ .
$y^2-14y+x^2-4x+37=0$ by adding $(-\frac{b}{2a} )^2$ to both the x and y portions of this equation you can complete the squares. $(-\frac{b}{2a})^2=(-\frac{-14}{2(1)})^2$ and $(-\frac{-4}{2(1)})^2$ which equals 49 and 4.
Add 49 and 4 to both sides and the equation is now: $y^2-14y+49+x^2-4x+4=-37+49+4$ You can simplify the y and x portions of the equations into the perfect squares or factored form $(y-7)^2$ and $(x-2)^2$ .
Finally put the whole thing together. $(y-7)^2+(x-2)^2=16$ .

I hope this helps!

5 0

3 years ago