The distance between two cities is 747 km, and they are 22.7 cm apart on a map. Find the distance between the two points 6.9 cm apart on the same map
Round the answer to the nearest integer, the nearest km

answer: 4 (:

step-by-step explanation:

3 3 6, because in every triangle the longer side is always shorter than the sum of the other two

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

since no one answered yet i will give it a shot, not completely sure tho.

i think it should be y=cos(x+2pi), (third answer, answer c)

good luck.