1 stone = 20 square inches
1 stone * 30 = 20 square inches * 30
30 stones = 600 square inches
HEY THERE FAM.
THE CORRECT ANSWER IS....<span> D.(4x-7x)+11</span>
1. Anwser=53.3 (do 40*3 then anwser x 4)
2anwser=120
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.
we have that
x + 3y = 6 -------> first equation
2x − y = 10
x + 3y = 6-----> substract x both sides
-x+x+3y=6-x
3y=6-x-----> divide by 3 both sides
y=(6-x) /3
y=2-(x/3)
y=-(x/3)+2
therefore
the answer is
negative one thirdx + 2