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motikmotik
2 years ago
7

Does someone mind helping me with this question? Thank you!

Mathematics
1 answer:
Soloha48 [4]2 years ago
4 0

Answer: 640

Step-by-step explanation:

The scale factor is 20/5=4, so the ratio of the areas is the square of this, or 16.

Thus, the area of ABCD is 40(16)=640.

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Find the center of a circle with the equation: x2 y2−32x−60y 1122=0 x 2 y 2 − 32 x − 60 y 1122 = 0
mixas84 [53]

The equation of a circle exists:

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

The center of the circle exists at (16, 30).

<h3>What is the equation of a circle?</h3>

Let, the equation of a circle exists:

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

We rewrite the equation and set them equal :

$(x-h)^2 + (y-k)^2 - r^2 = x^2+y^2- 32x - 60y +1122=0

$x^2 - 2hx + h^2 + y^2 - 2ky + k^2 - r^2 = x^2 + y^2 - 32x - 60y +1122 = 0

We solve for each coefficient meaning if the term on the LHS contains an x then its coefficient exists exactly as the one on the RHS containing the x or y.

-2hx = -32x

h = -32/-2

⇒ h = 16.

-2ky = -60y

k = -60/-2

⇒ k = 30.

The center of the circle exists at (16, 30).

To learn more about center of the circle refer to:

brainly.com/question/10633821

#SPJ4

7 0
2 years ago
Help please and you will get brainliest
Fiesta28 [93]
The correct answer to your question is 20x+25
7 0
3 years ago
Read 2 more answers
What is 20% of 55?<br> I need help PLEASE!
Assoli18 [71]
20% of 55 is 11

Convert your percentage into a decimal: 
\frac{20}{100} = 0.2

Multiply your decimal by 55:
0.2 \times 55 = 11
8 0
3 years ago
Read 2 more answers
F(x)= -2(x-5)^2+8
geniusboy [140]
I don’t know all of it but....
Axis of symmetry is x=5
Vertex changed to (5,8)
Parabola opens down
4 0
3 years ago
Given the function g(x) = 8x − 2, compare and contrast g(−2) and g(4). Choose the statement that is true concerning these two va
Anit [1.1K]
G(-2) = 8(-2) -2 = -16 - 2 = -18 
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 as you can see 30 is greater than -18 so the answer is C
6 0
3 years ago
Read 2 more answers
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