Answer:
7
Step-by-step explanation:
formula for circumference of a circle is
d
7
=
d
d = 7
Answer:
y= -1/2x+5 , y= -4x -2
Step-by-step explanation:
im not very sure
Answer:
Your answer is C.
Step-by-step explanation:
I answered it on paper. When it comes to explaining I have to be person to person. But I hope this helps. :)
Circumference + perimeter =38
x = circumference of circle
find r in terms of x
2

r=x
r=

Area=

r^2
so..
A=

(

)^2
=

(

)
=

(38-x) is perimeter
then

(

)^2

+ (

)^2
then you graph it and it equals
16.716 cm the circumference of the circle
3y = -2x + 2
y = x + 4 (Substitute the y)
3(x + 4) = -2x + 2 (Distribute)
3x + 12 = -2x + 2 (Add 3 to both sides)
+3x +3x
------------------------------------------
12 = 1x + 2 (Subtract 2 from both sides)
-2 - 2
------------------------
10 = 1x (Divide by 1 on both sides)
10/1 = 1x/1
x = 10
This is your x-coordinate