Dakarai wrote the system of linear equations below. 7x+8y=28 and -3x+9y=-24 dakarai then wrote the coefficient matrix that represented this system. which matrix could she have written? 7 8 -3 9 7 -3 8 9 7 8 28 -3 9 -24 7 -3 28 8 9 -24

The system of linear equations

can be represented in the form of the Matrix as

Where

The matrix A is called the coefficient matrix of the system of linear equations.

Here the given system of linear equation as:

The matrix form of the given system of equation as

The coefficient matrix of A is

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950