20= -B/0.2
multiply -B/ 0.2 both sides
= -4
Answer:

Step-by-step explanation:
From the question we are told that
Number of runners 
Distance 
Generally the top three places can be determined mathematically as


therefore the top three can be determined in 336ways
Answer:
20 degrees
Step-by-step explanation:
the angle that is showing 160, if it's attached to the straight line it's 180, but subtract 160-180 then you get 20, which is missing angle x
Assuming that the base is 5 cm and the height is 12 cm, so
by dilating the legs by a scale factor of 2/3, the new dimensions are:
base = 5 cm * (2 / 3) = 10/3 cm
height = 12 cm * (2 / 3) = 8 cm
So the area of a right triangle is calculated using the
formula:
A = b h / 2
A = (10/3) * 8 / 2
<span>A = 13.33 cm^2</span>