If the determinant of the coefficient matrix of a linear system is 0, then the system has no unique solution. Otherwise, the system has 1 unique solution.
Does the following linear system have a unique solution?
2x + 3y = 9
-4x - y = 2
no unique solution
one unique solution

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^

-2 is the right

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet

part a: 1.08

part b: 27.59