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3 years ago

Answer the question right you get brainliest

Mathematics

1 answer:

azamat3 years ago

7 0

Answer:

radius is 25

hope thus helps

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A certain region of America with over 500,000 households has a mean household income of $70,000 with a standard deviation of $20

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Answer:

Mean = 70,000 dollars

SD = 800 dollars

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Step-by-step explanation:

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3 years ago

How many pounds per cup is shown in the proportional relationship below

Lilit [14]

4 pounds per 20 cups.

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3 years ago

Help please? I don’t know much about consecutive integers...

Ugo [173]

Consecutive intergers are numbers that follow each other in order.

The correct answer is 26 and 27 because it equals to 53 which is the closest to 52.

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3 years ago

Identify the center and radius from the equation of the circle given below. x^2+y^2+121-20y=-10x

Tcecarenko [31]

Answer:

Center: (-5,10)

Radius: 2

Step-by-step explanation:

The equation of the circle in center-radius form is:

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

Where the point (h,k) is the center of the circle and "r" is the radius.

Subtract 121 from both sides of the equation:

$x^2+y^2+121-20y-121=-10x-121\\x^2+y^2-20y=-10x-121$

Add 10x to both sides:

$x^2+y^2-20y+10x=-10x-121+10x\\x^2+y^2-20y+10x=-121$

Make two groups for variable "x" and variable "y":

$(x^2+10x)+(y^2-20y)=-121$

Complete the square:

Add $(\frac{10}{2})^2=5^2$ inside the parentheses of "x".

Add $(\frac{20}{2})^2=10^2$ inside the parentheses of "y".

Add $5^2$ and $10^2$ to the right side of the equation.

Then:

$(x^2+10x+5^2)+(y^2-20y+10^2)=-121+5^2+10^2\\(x^2+10x+5^2)+(y^2-20y+10^2)=4$

Rewriting, you get that the equation of the circle in center-radius form is:

$(x+5)^2+(y-10)^2=2^2$

You can observe that the radius of the circle is:

$r=2$

And the center is:

$(h,k)=(-5,10)$

6 0

3 years ago

Read 2 more answers

I will give you brainliest !!! The graph of y=8x+7 is:

victus00 [196]

Answer:

Step-by-step explanation:

A line that shows all solutions

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3 years ago