Answer:
Step-by-step explanation:
Given that A is a square matrix and A is idempotent

Consider I-A
i) 
It follows that I-A is also idempotent
ii) Consider the matrix 2A-I

So it follows that 2A-I matrix is its own inverse.
Answer:
The answer is the second answer from the image. Which is 5x-8y=$75
Step-by-step explanation:
It is that answer because it costs $5 for one cheese pizza and $8 for a pepperoni pizza, so the answer is 5x-8y=75
still confused?
Its that answer because the first one and the third one are the same, just both equations like in different ways like example 10+2 is 12 right? And 2 + 10 is still 12 so that means the second answer from the image is the answer.
Hope that helps.
Answer:
It is 2.
Step-by-step explanation:
The equation becomes -2y=-4x=5
But you divide by -2 to get y solo. So -4/-2=2.
Answer: $8.35
Step-by-step explanation:
Given: The amount as gross pay= $576.00
The rate of Medicare tax =1.45% = 0.0145
Now, to calculate the medicare tax we need to multiply the rate of Medicare tax with the gross pay , we get

Answer:
(f of)(-2) = -65
Step-by-step explanation:
<u>Set up (f of)(-2)</u>
(f o f)(-2) = f(f(-2))
<u>Once you get (fof)(-2) you then have f(#)</u>
f(6(-2) + 1) = f(-11)
6(-11) + 1 = -66 + 1 = -65