1280*.8=1024
1024*1.09=1116.16
Tax is the last thing added, savings before tax since
Answer:
35+13-36
Step-by-step explanation:
35+13=48
48-36=12
Answer:
HDE
Is there more than one answer choice?
Step-by-step explanation:
MRK ME BRAINLIEST PLZZZZZZZZZZZZZZZ
First, write a statement to define your unknown variable. This is technically not essential to solving the problem, but many teachers prefer to see it.
Example: Let w = the manatee's weight in pounds.
Next, decide what the variable needs to be multiplied by. 12% is equal to 0.12. Usually when a problem says "of," it wants you to multiply. Therefore, 12% of the body weight equals 0.12w. Since the problem already says that this is how much the manatee eats every day, that is your answer.
y = 0.12w
Answer
a) k=7, h=9, the unique solution of the system is 
b) If k=6 and h=8 the system has infinite solutions.
c)If k=6 and h=9 the system has no solutions.
Step-by-step explanation:
I am assuming that the system is x1+3x2=4; 2x1+kx2=h
The augmented matrix of the system is ![\left[\begin{array}{ccc}1&3&4\\2&k&h\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%263%264%5C%5C2%26k%26h%5Cend%7Barray%7D%5Cright%5D)
. If two times the row 1 is subtracted to row 2 we get the following matrix![\left[\begin{array}{ccc}1&3&4\\0&k-6&h-8\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%263%264%5C%5C0%26k-6%26h-8%5Cend%7Barray%7D%5Cright%5D)
.
Then
a) If k=7 and h=9, the unique solution of the system is 
and solviong for 
,
Then the solution is
b) If k=6 and h=8 the system has infinite solutions because the echelon form of the matrix has a free variable.
c)If k=6 and h=9 the system has no solutions because the last equation of the system of the echelon form of the matrix is 
