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3 years ago

I need help!! PLEASE PLEASEE HELP ME

Mathematics

1 answer:

zheka24 [161]3 years ago

7 0

The second choice! I hope my math is right!

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3r+2/4=2 solve for r

sladkih [1.3K]

Answer: r=1/2

Step-by-step explanation:

5 0

2 years ago

Circles are described below by the coordinates of their centers, C, and one point on their circumference, A. Determine an equati

Art [367]

Using the given center and point at the circumference, the equation of the circles are:

a) $(x - 5)^2 + (y - 2)^2 = 100$

b) $(x + 2)^2 + (y + 5)^2 = 169$

c) $(x - 5)^2 + (y + 1)^2 = 65$

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

The equation of a circle of radius r and center $(x_0,y_0)$ is given by:

$(x - x_0)^2 + (y - y_0)^2 = r^2$

Item a:

Center C(5,2), hence $x_0 = 5, y_0 = 2$ .

The point at the circumference is A(11,10), hence:

$(x - 5)^2 + (y - 2)^2 = r^2$

$(11 - 5)^2 + (10 - 2)^2 = r^2$

$r^2 = 100$

Hence:

$(x - 5)^2 + (y - 2)^2 = 100$

Item b:

Center C(-2,-5), hence $x_0 = -2, y_0 = -5$ .

The point at the circumference is A(3,-17), hence:

$(x + 2)^2 + (y + 5)^2 = r^2$

$(3 + 2)^2 + (-17 - 5)^2 = r^2$

$r^2 = 169$

Hence:

$(x + 2)^2 + (y + 5)^2 = 169$

Item c:

Center C(5,-1), hence $x_0 = 5, y_0 = -1$ .

The point at the circumference is A(-2,-5), hence:

$(x - 5)^2 + (y + 1)^2 = r^2$

$(-2 - 5)^2 + (-5 + 1)^2 = r^2$

$r^2 = 65$

Hence:

$(x - 5)^2 + (y + 1)^2 = 65$

You can learn more about equation of a circle at brainly.com/question/24307696

4 0

2 years ago

The drawing shown contains the intersection of two lines.

yulyashka [42]

Since they are vertical angles, they equal each other. Therefor the equation would be: 30x-29 = 20x+21
10x = 50
X = 5
After, you plug whatever x is back into the other equations.
20(5)+21 = 121 and 30(5)-29 = 121

7 0

3 years ago

Ms. Ghandi runs 1 mile each morning and 1 mile each evening. She also does

RoseWind [281]

The first expression, 2(m+10p) represents how much she exercised because Ms. Ghandi runs a mile twice a day and does 10 push ups twice a day so if you take out the common multiple of 2 and multiply it by one set is shows how much she does in a day
the second equation, 2m+20p represents how much she exercises because she runs a mile twice a day and does 10 push ups twice a day

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3 years ago

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Solve for y <br><br> 2x + y >= 4

babunello [35]

2x + y >= 4
- 2x
y >= 4 - 2x

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3 years ago

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