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kifflom [539]
3 years ago
6

Hi, could someone help me with these two questions please? Thank you!

Mathematics
1 answer:
Sophie [7]3 years ago
7 0
7 is option C
8 is option A
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What is the theoretical probability that one of the 2 red marbles would be drawn from a bag including all 8 marbles shown?
LenKa [72]

Answer:

1/4

Step-by-step explanation:

3 0
3 years ago
Find the radius of the circle with equation x²+y²+8x+8y+28=0
galina1969 [7]
<h2>Hello!</h2>

The answer is:

Center: (-4,-4)

Radius: 2 units.

<h2>Why?</h2>

To solve the problem, using the given formula of a circle, we need to find its standard equation form which is equal to:

(x-h)^{2}+(y-k)^{2}=r^{2}

Where:

"h" and "k" are the coordinates of the center of the circle and "r" is its radius.

So, we need to complete the square for both variable "x" and "y".

The given equation is:

x^{2}+y^{2}+8x+8y+28=0

So, solving we have:

x^{2}+y^{2}+8x+8y=-28

(x^2+8x+(\frac{8}{2})^{2})+(y^2+8y+(\frac{8}{2})^{2})=-28+((\frac{8}{2})^{2})++(\frac{8}{2})^{2})\\\\(x^2+8x+16 )+(y^2+8y+16)=-28+16+16\\\\(x^2+4)+(y^2+4)=4

(x^2-(-4))+(y^2-(-4))=4

Now, we have that:

h=-4\\k=-4\\r=\sqrt{4}=2

So,

Center: (-4,-4)

Radius: 2 units.

Have a nice day!

Note: I have attached a picture for better understanding.

3 0
3 years ago
Explain what exponential growth is please
aniked [119]

A funtion in whicb the dependent variable increases by the same factor over each unit of time

3 0
3 years ago
Find the sum of 5 smallest consecutive whole numbers. Not 15
gogolik [260]

Answer:

10

Step-by-step explanation:

0 is the first whole number

The 5 smallest consecutive whole numbers:

0 , 1 , 2 , 3, 4

Add

0 + 1 + 2 + 3 + 4

10

Hope this helps :)

6 0
3 years ago
What is the decimal equivalent of 1/3
Vesna [10]

Answer:

Step-by-step explanation:

1/3 0.333 repeated 0.333 times 100 =33.333…%

4 0
3 years ago
Read 2 more answers
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