x=31,y=−61
Put the equations in standard form and then use matrices to solve the system of equations.
5x+4y=1,3x−6y=2
Write the equations in matrix form.
(534−6)(xy)=(12)
Left multiply the equation by the inverse matrix of (534−6).
inverse((534−6))(534−6)(xy)=inverse((534−6))(12)
The product of a matrix and its inverse is the identity matrix.
(1001)(xy)=inverse((534−6))(12)
Multiply the matrices on the left hand side of the equal sign.
(xy)=inverse((534−6))(12)
For the 2×2 matrix (acbd), the inverse matrix is (ad−bcdad−bc−cad−bc−bad−bca), so the matrix equation can be rewritten as a matrix multiplication problem.
(xy)=(5(−6)−4×3−6−5(−6)−4×33−5(−6)−4×345(−6)−4×35)(12)
Do the arithmetic.
(xy)=(71141212−425)(12)
Multiply the matrices.
(xy)=(71+212×2141−425×2)
Do the arithmetic.
(xy)=(31−61)
Extract the matrix elements x and y.
x=31,y=−61
Answer:
48 units sq
Step-by-step explanation:
Find the area of each square/rectangle
2x2
2x5
2x5
2x5
2x2
2x5
Add all the parts together
4 + 10 + 10 + 10 + 4 + 10
= 48 units sq
The answer is C. $95.83. To get the answer, you need to
convert all units into yard first. Then, multiply all the given numbers having
a result of 2.0827 cubic yards. Lastly, multiply the result to the concrete
cost of $46. So the cost to pour a slab for a patio is $95.83.
Answer:
Ryan's revenue last month if he sold 16 new books and 25 old books
is $337.50.
Step-by-step explanation:
The number of old books sold by Ryan = 25
The cost of each old book = $5.50
⇒ Total amount earned by selling 25 old books = 25 x $5.50
= $137.5
The number of new books sold by Ryan = 16
The cost of each new book = $12.50
⇒ Total amount earned by selling 16 new books = 16 x $12.50
= $200
Hence Total amount earned by Ryan
= Amount earned by selling old books + Amount by selling new books
= $137.5 + $200
= $337.50
or, Total amount earned by Ryan = $337.50
Hence Ryan's revenue last month if he sold 16 new books and 25 old books is $337.50.
Answer:
Plz subscribe my Gaming channel Sameer Duos
Step-by-step explanation:
The correct answer is whole number