The ratio of boys to girls in a group is 7:1. If there are 66 more boys than girls, work out how many girls there are.
1 answer:
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The answer of the matrix equation will be
Matrices are known as the tables of numbers. The numbers are usually put into the big brackets. Matrices are given the 'orders', which describes the size of the matrices. The order is the number of rows 'by' the number of columns. For example: a 2 by 3 matrix has 2 rows and 3 columns.
Step-by-step explanation:
1.Find the inverse matrix of the equation
The inverse of this equation will be :
2.Multiply it with
3.Multiply the rows of the first matrix with the columns of another
2×5+(-3)×4
(-1)×5+2×4
4.Simply each element
The answer will be
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