Answer:
The Answer would be C, i think
Step-by-step explanation:
Answer:
b. circle; 
Step-by-step explanation:
The given conic has equation;

We complete the square to obtain;

This is a circle with center;

This implies that;

When the circle is rotated through an angle of
,
The new center is obtained using;
and 
We plug in the given angle with x and y values to get;
and 
This gives us;

The equation of the rotated circle is;

Expand;

Multiply through by 4; to get

Write in general form;

Divide through by 2.

Answer:
C. 320 (correct)
Step-by-step explanation:
If Samantha can type 40 words per minute, to find the number of words Samantha can type in 8 minutes, multiply 40 by 8.
40×8=320
Therefore, Samantha can type 320 words in 8 minutes.
I hope this helps!
Answer:
-20
Step-by-step explanation:
Combine Like Terms:
=−12+−7k+6k+−8+k
=(−7k+6k+k)+(−12+−8)
=−20
Answer:
its the same as QR- 38
Step-by-step explanation: