2 years ago

I need help with this

Mathematics

1 answer:

aev [14]2 years ago

6 0

Answer: yes her answer is correct please mark brainliest

Step-by-step explanation:

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dexar [7]

Answer:C

Step-by-step explanation: You want to add up all the marbles, and then take the red marbles and divide by all the marbles 7/20

8 0

2 years ago

Determine the center and radius: x2 + y2 - 10x + 8y -8 = 0

Kipish [7]

So our equation currently is ⇒ $x^2+y^2-10x+8y-8 = 0$

Let's first move all the constant to one side and group 'like variables' together:

$(x^2-10x)+(y^2+8y) = 8$

Now lets complete the square of both equations

$(x^2-10x+25)+(y^2+8y +16) = 8 + 25 + 16\\(x-5)^2+(y+4)^2 = 49\\(x-5)^2+(y+4)^2 = 7^2$

Now we know the circle's general equation format is:

⇒ $(x-h)^2+(y-k)^2 = r^2$

(h, k) ⇒ coordinate of the center of the circle
r ⇒ length of radius of circle

Thus the radius of the circle is 7

Hope that helps!

7 0

2 years ago

mollys jump rope is 6 1/3 feet long. Gals jump rope 4 2/3 feet lo g. How much longer is Molly's jump rope?

Vlad1618 [11]

6 1/3- 4 2/3 =5 4/3- 4 2/3=1 2/3
You can't subtract fractions unless you have the same denominator.

8 0

3 years ago

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What is the median of these numbers 10, 12, 8, 11, 10, 15, 7

prohojiy [21]

Answer:

answer is 11.

Step-by-step explanation:

the median is always the middle

3 0

3 years ago

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Help! Approximately what portion of the circle is shaded blue ? A.3/4 B.1/2 C.5/9

Strike441 [17]

Answer:

Step-by-step explanation:

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3 years ago