1. Which of these is NOT a quadratic equation? a. 4-2-3
b. 20y + 3) = By
c. (1 - 1)(n + 2) = 5n
d. m(1 - 6m) = 0

the answer is a

step-by-step explanation:

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)

$75.00

step-by-step explanation:

i = prt

i = 1,5000 * 0.025 * 2

i = 75