Answer:
-5.9n+9.1
Step-by-step explanation:
3.1 - 3.9n - 2n + 6=
Combind like terms
Step 1: -3.9 - 2n=-5.9n
Step 2: 6 + 3.1=9.1
Combine:
-5.9n+9.1
Answer:

Step-by-step explanation:
You can use the center of a circle to write an equation in vertex form. Vertex form is
and the vertex is (h,k). Notice (h,k) are the opposite sign in the equation then as the point.
Here h = -4 and k = 3. Substitute these values and the value r = 5.

Answer and workings can be found in the attachment below...
Answer:
D
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
An angle is straight if and only if it’s measure is 180.