Jack is four years older than twice his sister my’s age meyer is five years old how old is zach

6

step-by-step explanation:

4+x=2y

y=5

4+x=10

x=6

i think its 14

step-by-step explanation:

jack is represented by j and meyer is m then j=4+2m

if we know meyer is 5 then

2×5+4

10+4

14

step-by-step explanation:

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