To solve this, we are going to use the surface are of a sphere formula:
![A=4 \pi r^2](https://tex.z-dn.net/?f=A%3D4%20%5Cpi%20r%5E2)
where
![A](https://tex.z-dn.net/?f=A)
is the surface area of the sphere
![r](https://tex.z-dn.net/?f=r)
is the radius of the sphere
We know for our problem that
![A=2122.64](https://tex.z-dn.net/?f=A%3D2122.64)
and
![\pi =3.14](https://tex.z-dn.net/?f=%20%5Cpi%20%3D3.14)
, so lets replace those vales in our formula:
![A=4 \pi r^2](https://tex.z-dn.net/?f=A%3D4%20%5Cpi%20r%5E2)
![2122.64=4(3.14)r^2](https://tex.z-dn.net/?f=2122.64%3D4%283.14%29r%5E2)
![2122.64=12.56r^2](https://tex.z-dn.net/?f=2122.64%3D12.56r%5E2)
Now, we just need to solve our equation for
![r](https://tex.z-dn.net/?f=r)
:
![\frac{2122.64}{12.56} =r^2](https://tex.z-dn.net/?f=%20%5Cfrac%7B2122.64%7D%7B12.56%7D%20%3Dr%5E2)
![r^2=\frac{2122.64}{12.56}](https://tex.z-dn.net/?f=%20r%5E2%3D%5Cfrac%7B2122.64%7D%7B12.56%7D)
![r^2=169](https://tex.z-dn.net/?f=r%5E2%3D169)
![r=+or- \sqrt{169}](https://tex.z-dn.net/?f=r%3D%2Bor-%20%5Csqrt%7B169%7D%20)
![r=13](https://tex.z-dn.net/?f=r%3D13)
or
![r=13](https://tex.z-dn.net/?f=r%3D13)
Since the radius of a sphere cannot be a negative number,
![r=13](https://tex.z-dn.net/?f=r%3D13)
.
We can conclude that the radius of a sphere with surface area <span>2,122.64 </span>
![in^2](https://tex.z-dn.net/?f=in%5E2)
is
13 in.
Answer: y=-x-1
Step-by-step explanation:
To find the answer, 5 and -6 have to be substituted in the place of x in the equation y = -x + b(The slope has to be the same because the line is parallel). -6 = -5 + b, b = -1. This means that the equation is y = -x - 1.
"The mean study time of students in Class B is less than students in Class A" is the statement among the following choices given in the question that is true for the data sets. The correct option among all the options that are given in the question is the second option or option "B". I hope the answer helped you.
Answer:
commission rate of Maurice is 12%
Step-by-step explanation:
Maurice earns commission = $6,048
Lexus priced at = $50,400
Maurice's commission rate =
=![\frac {commision}{rate} \times 100](https://tex.z-dn.net/?f=%5Cfrac%20%7Bcommision%7D%7Brate%7D%20%5Ctimes%20100)
=![\frac{6048}{50400} \times 100](https://tex.z-dn.net/?f=%5Cfrac%7B6048%7D%7B50400%7D%20%5Ctimes%20100)
=12 %
hence the commission rate of Maurice is 12%
Given:
A(-5,4)
B(3,4)
C(3,-5)
So point D is:
so point D is (-5,-5)
For AB is
Distance between two point is:
![\begin{gathered} (x_1,y_1)and(x_2,y_2) \\ D=\sqrt[]{(x_2-x_1)^2+(y_2-y_1)^2} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20%28x_1%2Cy_1%29and%28x_2%2Cy_2%29%20%5C%5C%20D%3D%5Csqrt%5B%5D%7B%28x_2-x_1%29%5E2%2B%28y_2-y_1%29%5E2%7D%20%5Cend%7Bgathered%7D)
so distance between A(-5,4) and B(3,4) is:
![\begin{gathered} D=\sqrt[]{(3-(-5))^2+(4-4)^2} \\ =\sqrt[]{(8)^2+0^2} \\ =8 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20D%3D%5Csqrt%5B%5D%7B%283-%28-5%29%29%5E2%2B%284-4%29%5E2%7D%20%5C%5C%20%3D%5Csqrt%5B%5D%7B%288%29%5E2%2B0%5E2%7D%20%5C%5C%20%3D8%20%5Cend%7Bgathered%7D)
So AB is 8 unit apart.
For B(3,4) and C(3,-5).
![\begin{gathered} D=\sqrt[]{(3-3)^2+(-5-4)^2} \\ =\sqrt[]{0^2+(-9)^2} \\ =9 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20D%3D%5Csqrt%5B%5D%7B%283-3%29%5E2%2B%28-5-4%29%5E2%7D%20%5C%5C%20%3D%5Csqrt%5B%5D%7B0%5E2%2B%28-9%29%5E2%7D%20%5C%5C%20%3D9%20%5Cend%7Bgathered%7D)
So BC is 9 unit apart.
For fourth bush point is (-5,-5) it left of point C(3,-5) is:
![\begin{gathered} D=\sqrt[]{(3-(-5))^2+(-5-(-5))^2} \\ =\sqrt[]{(8)^2+0^2} \\ =8 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20D%3D%5Csqrt%5B%5D%7B%283-%28-5%29%29%5E2%2B%28-5-%28-5%29%29%5E2%7D%20%5C%5C%20%3D%5Csqrt%5B%5D%7B%288%29%5E2%2B0%5E2%7D%20%5C%5C%20%3D8%20%5Cend%7Bgathered%7D)
so fourth bush is 8 unit left of C.
For fourth bush(-5,-5) below to point A(-5,4)
![\begin{gathered} D=\sqrt[]{(-5-(-5))^2+(4-(-5))^2} \\ =\sqrt[]{0^2+9^2} \\ =9 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20D%3D%5Csqrt%5B%5D%7B%28-5-%28-5%29%29%5E2%2B%284-%28-5%29%29%5E2%7D%20%5C%5C%20%3D%5Csqrt%5B%5D%7B0%5E2%2B9%5E2%7D%20%5C%5C%20%3D9%20%5Cend%7Bgathered%7D)
so fourth bush 9 units below of A.