The answer to your question is 41.6
Answer:
Center (4,1)
Radius r = 4
Step-by-step explanation:
Complete the square to fill in the standard circle equation:
- , (h,k) is the center, r is the radius
Use formula:
therefore,
(h,k) = (4,1)
r = 4
Answer:
Blue is the glove.
Step-by-step explanation:
Assuming the matrix which multiplies the clear text code is:
|-3 2|
C =|-4 3|
And the matrix re<presenting the encoded text is
:
|10 -26 -49 9 3 -13 -50|
B = |16 -33 -63 16 9 -10 -65|
Calling X the secret message, the relationship between the 3 matrices can be represented as:
C*X = B
Solving for X:
X = C^-1*B
where C^-1 is the inverse of C.
|-3 2|
C^-1 =|-4 3|
Multiplying:
|2 12 21 5 9 19 20
|
X = |8 5 7 12 15 22 5
|
Replacing numbers by its corresponded letter (see picture attached):
|B L U E I S T
|
x = |H E G L O V E
|