Answer:
(a)
(b)
Step-by-step explanation:
(a) For using Cramer's rule you need to find matrix and the matrix for each variable. The matrix is formed with the coefficients of the variables in the system. The first step is to accommodate the equations, one under the other, to get more easily.
To get , replace in the matrix A the 1st column with the results of the equations:
To get , replace in the matrix A the 2nd column with the results of the equations:
Apply the rule to solve :
In the case of B2, the determinant is going to be zero. Instead of using the rule, substitute the values of the variable in one of the equations and solve for :
(b) In this system, follow the same steps,ust remember is formed by replacing the 3rd column of A with the results of the equations:
What do you mean answer key??
Answer:
Step-by-step explanation:
Sharia law is based on the Islamic Holy book called the Qur'an
Answer: 44 dollars
Step-by-step explanation:
so there is two ways to do this so ill show you both and you can see which one is easier for you!
method 1- divide the total amount of tickets by the amount with the cost. Then multiply that number by the cost
20/5=4 4*11=44
method 2- divide the money by the number with the cost. Then multiply it by the total amount of tickets.
11/5=2.2 2.2*20=44
Answer:
I think that will be 2.7
Step-by-step explanation:
i did 5x^3 x 3/10x^-5
-5x -5x
and then you get 3/5x^-2(i got -2 because I did 3+-5)
x= 2.7
I could be wrong sorry if I am wrong