First one to answer it right gets Brainliest

400

Step-by-step explanation:

8 out of 10 remember their chargers ( multiply by 10 )

80 out of 100 remember their chargers ( multiply by 5 )

400 out of 500 remember their chargers

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1

that is the sum

step-by-step explanation:

there are no other answers without knowing the variables values