The process he should use in order to find the circumference of a circle is that he should find the radius and multiply the radius by 2 and then afterwards multiply the product by pi or 3.14. This is because the circumference of a circle is formulated as C = 2πr or C = 2(3.14)r.
Answer is B :) cuz .5•4 is 2 so that is 1/8 of what it was before
Answer:
First one :
Function? Yes
Domain : { -1 , -2 , -3 }
Range { 10 , 13 , 16 }
Second one:
Function? No
Domain : { 2 , 3 }
Range : { 10 , 13 , 16 }
Third one :
Function ? No
Domain : { 33 , 35 , 36 }
Range : { 8 , 10 }
Step-by-step explanation:
A function is a relation where each input has its own output. In other words a function is a relation where each x value has its own y value. If an x value repeats the relation is not a function.
The domain is the set of x values in a relation whereas the range is the set of y values in a relation
For the first one. No x value repeats, each input has its own output therefore this is a function.
Domain : { -1 , -2 , -3 }
Range { 10 , 13 , 16 }
The second one : The x value 2 repeats therefore the relation is not a function.
Domain : { 2 , 3 }
Range : { 10 , 13 , 16 }
The third one : Each x value has its own y value therefore this relation is a function. ( Note that y values are allowed to repeat )
Domain : { 33 , 35 , 36 }
Range : { 8 , 10 }
If your solving for for y, then simplify both sides of the equation, then isolating the variable.
y = 20
Answer:
Since the value is always multiplied by the same factor(19), the relationship is proportional.
Step-by-step explanation:
To see if the equation represents a proportional relationship, we see if the division of y by x is always the same
![x = 1, y = 19*1 = 19](https://tex.z-dn.net/?f=x%20%3D%201%2C%20y%20%3D%2019%2A1%20%3D%2019)
![x = 2, y = 19*2 = 38](https://tex.z-dn.net/?f=x%20%3D%202%2C%20y%20%3D%2019%2A2%20%3D%2038)
![x = 3, y = 19*3 = 57](https://tex.z-dn.net/?f=x%20%3D%203%2C%20y%20%3D%2019%2A3%20%3D%2057)
So
![\frac{57}{3} = \frac{38}{2} = \frac{19}{1} = 19](https://tex.z-dn.net/?f=%5Cfrac%7B57%7D%7B3%7D%20%3D%20%5Cfrac%7B38%7D%7B2%7D%20%3D%20%5Cfrac%7B19%7D%7B1%7D%20%3D%2019)
Equal, so proportional