Answer: 3.25 m
Step-by-step explanation:
as a tangency and a radius make a right angle, we can use Pythagoras.
c² = a² + b²
(r + 2)² = r² + 3²
r² + 4r + 4 = r² + 9
4r = 5
r = 1.25 m
so the official is standing 1.25 + 2 = 3.25 m from the center of the circle
This makes sense as a standard discus throwing circle is 2.5 m dia.
3x^2-6x+5
for ax^2+bx+c=0
discriminant is b^2-4ac
when
1. b^2-4ac>0, there are 2 real roots
2. b^2-4ac=0, there is 1 real root
3. b^2-4ac<0, there are 2 complex roots
3x^2-6x+5
a=3
b=-6
c=5
(-6)^2-4(3)(5)
36-60
-24
answer is -24 is the discriminant
Answer:
nope
Step-by-step explanation:
n-o-p-e
Three feet, friend.
(And four legs.)
