Answer:
see explanation
Step-by-step explanation:
given that r varies jointly with x and y then the equation relating them is
r = kxy ← k is the constant of variation
To find k use the condition r = 15 when x = 3 and y = 4
k = 
= 
= 1.25
r = 1.25xy ← equation of variation
When x = 16 and y = 1.25, then
r = 1.25 × 16 × 1.25 = 25
Multiply this 15 mph by the conversion factor derived from 1.6 km = 1 mi:
15 mph 1.6 km
------------ * ---------- = 24 km/hr
1 1 mi
The cyclist's speed in km/hr is 24 km/hr.
In 3 hrs the cyclist can cover (24 km/hr)(3 hr) = 72 km.
You are trying to isolate the variable (n) so you would subtract 7.4 on both sides. Therefore n=5.3-7.4 which equals -2.1
Answer:
the probablity of rolling a one is 1/6
Step-by-step explanation:
Answer: area of triangle is base times height divide by 2
b*h/2
