given the equation of a circle x^2+y^2-10x+4y+13=0. find its center and radius. i am having trouble please help

Answers

Answer 1

Answer: $x^2+y^2-10x+4y+13=0\n x^2-10x+25+y^2+4y+4-16=0\n (x-5)^2+(y+2)^2=16\n\n \hbox{center}=(5,-2)\n r=4$

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solve using the substitution and elimination method 3a-12b=9 4a-5b=3 can someone please help?
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Convert the temperature 288 K to degrees Celsius.a. 748°C
b. 561°C
c. –172°C
d. 15°C

Answers

The answer is d. 15 c.

Hello,

F=1.8*C+32

K=C-273.15

288-273.15=14.85(°C)

Answer D

A square dance floor has a perimeter of 120 yards.What is the length of a diagonal of the dance floor?
O 38.3 yd
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Answers

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Draw a model to represent 3/4 divided by 3/12

Answers

The required model is attached in the image and the division of 3/4 by 3 /12 is 3.

Given that,
To draw the model to represent 3/4 divided by 3/12.

What is arithmetic?

In mathematics, it deals with numbers of operations according to the statements.

Model hs been attached below for the given problem of division,
= 3 * 4 / 3 * 12
For a rectangle space, drawing 4 column and 12 raws,
Now for 3 / 4 3 of the 4 column to be filled by red, for 3 / 12 every 3 cells in the row have been filled by red.
Calculating number of cells in 3 / 4 = 36
calculating number of cells in 3 / 12 = 12
Now ratio of the cells = 36 / 12 = 3

Thus, the required model is attached in the image and the division of 3/4 by 3 /12 is 3.

Learn more about arithmetic here:

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The answer you are looking for is 1/3.

First, you must look at the denominators of each fraction, to see if you can simply divide straight across. In this case, you cannot, which means you must multiply by the reciprocal or "flipped" number. Generally when you multiply by the reciprocal, you flip the number with the smaller denominator to multiply.

So, you have 4/3 * 3/12. You then multiply straight across (4 * 3)/(3 * 12), to get an answer of 12/36, which simplified (divided by 3/3) gives you a final answer of 1/3.

I hope this helps!

3. What is the slope of the table shown? Cars Washed Number Money ($) 5 40 10 80 15 120 20 160

Answers

The slope is 8.
(5,40) (10,80)
80-40=40
10-5=5
40/5=8

Parallel lines never intersect, therefore, do not have a solution.
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Answers

If the lines are parallel to each other, it won't intersect. It means that we can't get any intersect point by solving equations. There is no coordinate which satisfy both lines.

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Can someone pls pls help me