Arc ML = 2×∠MNL
= 2×43°
= 86°
_____
The measure of an inscribed angle is half the measure of the arc it intercepts. This simple relationship is used in many geometry problems, so is worth remembering (or at least, writing down in a handy place).
Y = mx + b
m = 1
b = 3
y = x+3
Hope it helps :)
F^-1(x) = sqrt 2(-5+x)/2, - sqrt 2(-5+x)/2
You need to work backwards
if it is no more than 9 units away from 8
thus x must be 8-9<x<8+9 solving -1<x<17
so the answer is 4.
