1) Work out the value of x. 2) Give reasons for your answer. Please!
1 answer:
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Answer:
Circumference of the circle drawn by Ginna is twice the Circumference of the circle drawn by Pierce.
Step-by-step explanation:
Given:
Radius of the circle drawn by Pierce = 3 cm
We need to find circumference of gianna's circle compare with the circumference of Pierce's circle.
Solution:
Radius of the circle drawn by Pierce = 3 cm
so we will find the Circumference of circle drawn by Pierce.
Now we know that;
Circumference of the circle is given by 2 times π times radius of the circle.
framing in equation form we get;
Circumference of the circle drawn by Pierce =
Now Given:
Ginna draws a circle with a radius that is twice as long as the radius of pierce's circle.
So we can say that;
radius of the circle drawn by Ginna is equal to 2 times radius of circle drawn.
so we can say that;
radius of the circle drawn by Ginna =
Circumference of the circle drawn by Ginna =
Now we can see that;
Circumference of the circle drawn by Ginna is while Circumference of the circle drawn by Pierce is
So we can say that;
Circumference of the circle drawn by Ginna is twice the Circumference of the circle drawn by Pierce.
So, parallel lines have the same slope, therefore a parallel line to 2x+12, will have the same slope as that one, so which is it? 
so, we're really looking for the equation of a line whose slope is 2, and runs through -1,1.
![\bf \begin{array}{lllll} &x_1&y_1\\ % (a,b) &({{ -1}}\quad ,&{{ 1}}) \end{array} \\\\\\ % slope = m slope = {{ m}}= \cfrac{rise}{run} \implies 2 \\\\\\ % point-slope intercept \stackrel{\textit{point-slope form}}{y-{{ y_1}}={{ m}}(x-{{ x_1}})}\implies y-1=2[x-(-1)] \\\\\\ y-1=2(x+1)\implies y-1=2x+2\implies y=2x+3](https://tex.z-dn.net/?f=%5Cbf%20%5Cbegin%7Barray%7D%7Blllll%7D%0A%26x_1%26y_1%5C%5C%0A%25%20%20%20%28a%2Cb%29%0A%26%28%7B%7B%20-1%7D%7D%5Cquad%20%2C%26%7B%7B%201%7D%7D%29%0A%5Cend%7Barray%7D%0A%5C%5C%5C%5C%5C%5C%0A%25%20slope%20%20%3D%20m%0Aslope%20%3D%20%7B%7B%20m%7D%7D%3D%20%5Ccfrac%7Brise%7D%7Brun%7D%20%5Cimplies%202%0A%5C%5C%5C%5C%5C%5C%0A%25%20point-slope%20intercept%0A%5Cstackrel%7B%5Ctextit%7Bpoint-slope%20form%7D%7D%7By-%7B%7B%20y_1%7D%7D%3D%7B%7B%20m%7D%7D%28x-%7B%7B%20x_1%7D%7D%29%7D%5Cimplies%20y-1%3D2%5Bx-%28-1%29%5D%0A%5C%5C%5C%5C%5C%5C%0Ay-1%3D2%28x%2B1%29%5Cimplies%20y-1%3D2x%2B2%5Cimplies%20y%3D2x%2B3)
so, we're really looking for the equation of a line whose slope is 2, and runs through -1,1.