Solve this linear system using determinants: 2x + 3y = 6 −8x − 3y = 12 |a| = |ax| =|ay|=

The solution of the system is: and

Explanation

Given linear system is ......

So, the co efficient matrix,

and the answer-column matrix :

Now, we will replace the x and y column in the co efficient matrix by the answer-column matrix for getting and respectively.

So, and

Now, we will find determinant of each matrix. So.....

According to the Cramer's rule,   and

So....

answer is more than one

step-by-step explanation:

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles