Identify which equations have one solution, infinitely many solutions, or no solution. 1/2y+3.2y = 20
3z +2.5 = 3.2+3z
1.1+3/4+2 = 3.1+3/4x
15/2+2z-1/4=4z+29/4-2z
2x+4=3x+1/2
4.5r= 3.2 +4.5r

answer: the answer is b. i think hope i got it correct

step-by-step explanation:

answer: 12,000

step-by-step explanation: first you ar e supposed to add. then multiply then subtract

what are you doing do you need examples of variable questions?

step-by-step explanation:

5a-1=9               bring the one over the =

5a=10                     divide by your variable

a=2

brainliest? ?

here try this one

3a-24=0

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0