Darragh has a Golden Eagle coin in his collection with a mass of 13.551\,\text{g}13.551g13, point, 551, start text, g, end text. An uncirculated Golden Eagle coin has a mass of 13.714\,\text{g}13.714g13, point, 714, start text, g, end text. How much mass has Darragh's coin lost?

step-by-step explanation:

there are 36 inches in a yard

25 : 36 = 0.69 yards (you can round to 0.70)

ratio is 2 : 9

the answer is three

13.5 : 3

thats one

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