-5x-4y=20 4x-5y=2
Which of the following choices of a will result in a system of linear equations with exactly one solution?

A, a can be any number
B, a can be any number except 0.8
C, a can be any number except -0.8
D, a=0.8

step-by-step explanation:

and 90% of people marry there 7th grade love. since u have read this, u will be told good news 2night. if u don't pass this on nine comments ur worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of ur life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love u

read more on -

the awnser is visionary

answer: $13,622.84

step-by-step explanation: check the picture for info and stats : )

choice b

step-by-step explanation:

f(x) = 88x^2 -264x + 300

the line of symmetry of a parabola is defined by

h = -b/2a

where ax^2 +bx+c=0

so

h = - -264/ (2*88)

h = 3/2

so x = 1.5