Answer:
4/1 or 4
Step-by-step explanation:
20/5 share only 2 divisible number in common 1 and 5.
the greatest of those being 5
divide them both by 5 and you get 4/1 or 4.
Answer:
Fancy Foodstuffs
Step-by-step explanation:
Just calculate the value for one egg by dividing the price by the number of eggs and the lowest value is the best value.
You'll need to create two equations and have a 'system of equations' then use direct substitution to turn the equation into one. Whichever equation is easiest to solve for x or y. Solve that one for x or y and plug the result in for the variable in the other equation. Then you will have an equation with only 1 unknown.
The inverse of matrix is (43, -11, 2).
<h3>What is inverse of matrix?</h3>
A matrix is a multidimensional generalization of the concept of reciprocal of a number: the product between a number and its reciprocal is equal to 1; the product between a square matrix and its inverse is equal to the identity matrix.
given equation:
x + 5y + 10z = 8
y + 4z = -3
x+6y + 15z = 7
The cofactors of the matrix is
C_11 = -9
C_12= 4
C_13=-1
C_21 = -15
C_22= 5
C_23 = -1
C_31= 10
C_32= -4
C_33= 1
The cofactor matrix is,
![\left[\begin{array}{ccc}-9 & 4 & -1\\-15 & 5 & -1\\10 & -4 & 1\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-9%20%26%204%20%26%20-1%5C%5C-15%20%26%205%20%26%20-1%5C%5C10%20%26%20-4%20%26%201%5Cend%7Barray%7D%5Cright%5D)
The transpose of matrix,
![\left[\begin{array}{ccc}-9 & -15 & 10\\4 & 5 & -4\\1 & -1 & 1\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-9%20%26%20-15%20%26%2010%5C%5C4%20%26%205%20%26%20-4%5C%5C1%20%26%20-1%20%26%201%5Cend%7Barray%7D%5Cright%5D)
The determinant of matrix is = 21.
The augmented matrix is attached below
Hence, the inverse of matrix is (43, -11, 2).
Learn more about this concept here:
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