Answer:
multiply the left side of the constant vector by the inverse matrix
Step-by-step explanation:
The matrix equation ...
AX = B
is solved by left-multiplying by the inverse of A:
A⁻¹AX = A⁻¹B
IX = A⁻¹B . . . . . the result of multiplying A⁻¹A is the identity matrix
X = A⁻¹B . . . . . B needs to be multiplied by the inverse matrix
Question is Incomplete; Complete question is given below;
Cloud Nine is having a sale on all shirts and pants in the store. Olivia purchased 8 shirts and 4 pairs of pants for $176. Raheem purchased 3 shirts and 4 pairs of pants for $116. Let x represent the price of a shirt and y represent the price of a pair of pants. Write a system of equations, and use the elimination method to find a reasonable price for a pair of pants.
Answer:
The system of equations are
The reasonable price for pair of pants is $20.
Step-by-step explanation:
Let the price of shirt be 'x'.
Let price of pair of pants be 'y'.
Given:
Olivia purchased 8 shirts 4 pairs of pants for $176
So we can say that;
8 multiplied by the price of shirt plus 4 multiplied by the price of pair of pants is equal to 176.
framing in equation form we get;
Also Given:
Raheem purchased 3 shirts and 4 pairs of pants for 116.
So we can say that;
3 multiplied by the price of shirt plus 4 multiplied by the price of pair of pants is equal to 116.
framing in equation form we get;
Hence the system of equation are
Now by using elimination method we will subtract equation 2 from equation 1 we get;
Now Substituting the value of x in equation 1 we get;
Hence The reasonable price for pair of pants is $20.
Answer:
Step-by-step explanation:
Let the length of the rectangle be 'L'
And the width of the rectangle be 'W'
According to the statement:
Perimeter of a rectangle= 2(Length+Width)