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Nikitich [7]
2 years ago
10

Evaluate the expression x2 + y2 if x = -3 and y= -2

Mathematics
1 answer:
Ilya [14]2 years ago
5 0

Answer:

<h2>The answer is 13</h2>

Step-by-step explanation:

x² + y²

x = - 3 , y = - 2

Substitute the values of x and y into the above expression and solve

That's

( - 3)² + (-2)²

= 9 + 4

We have the final answer as

<h3>13</h3>

Hope this helps you

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Which equation represents the circle described? (in picture)
Sedaia [141]
You are right. In circle equation we have =r² so the correct answer will be C od D.  But we have to calculate the center of a circle.

x^2+y^2-8x-6y+24=0\quad|-24\\\\(x^2-8x)+(y^2-6y)=-24

Complete the square:

x^2-8x+a^2\implies a=\dfrac{8x}{2x}=4\implies x^2-8x+4^2\\\\\\y^2-6y+b^2\implies b=\dfrac{6y}{2y}=3\implies y^2-6y+3^2

And we have:

(x^2-8x)+(y^2-6y)=-24\\\\(x^2-8x+4^2)-4^2+(y^2-6y+3^2)-3^2=-24\\\\&#10;(x-4)^2+(y-3)^2-16-9=-24\\\\(x-4)^2+(y-3)^2-25=-24\quad|+25\\\\\boxed{(x-4)^2+(y-3)^2=1}

So the answer is C (the same left side of equation).
6 0
3 years ago
What is 33 percent of 400
bearhunter [10]

Hi there :)


Answer: 33% of 400 is 132.


I found this answer because I multiplied 400 * 3 which equals 13,200.

then I divide 13,200 by 100 and then you will get your answer of 132.


I hope this helps you if you need any help, feel free to message me.


-Wolfs

7 0
2 years ago
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IRINA_888 [86]

Step-by-step explanation:

hlejsjsisjdjsisjsjsjsjsjsisjsnsjssjjsjsjs as

7 0
2 years ago
The difference between the simple and compound interest for a certain sum of money of 3 years at 5% per annum is Rs.61.0. Find t
miss Akunina [59]

5% interest compounded annually for 3 years multiplies the initial balance by

... 1.05^3 = 1.157625

5% simple interest for 3 years multiplies the initial balance by 1 + 3*0.05 = 1.15.

The difference of these multipliers is

... 1.157625 - 1.15 = 0.007625

If the difference in account balance is Rs 61.00, then the invested principal amount P is

... P*0.007625 = 61.00

,.. P = 61.00/0.007625 = 8000.00

The sum of money is Rs 8000.

7 0
3 years ago
Please i need help and this is due in an hour
Ksju [112]

Answer:

\frac{100 meters}{x seconds}  = \frac{200 meters}{22.4 seconds}

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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