Answer:
<h2>C. None of the above</h2>
Step-by-step explanation:
Now to solve this problem, all we have to remember is the
formula for calculating the linear speed given the radial speed, that is:
v = r w
where,
v = is the linear velocity or linear speed
r = is the radius of the circular disk = (1 / 2) diameter
= (1/ 2) (2.5 inches) = 1.25 inches
w = is the radial velocity (must be in rad per time) =
7200 rev per minute
Calculating for v:
v = 1.25 inches (7200 rev per minute) (2 π rad / 1 rev)
v = 56,548.67 inches / minute
Converting to miles per hour:
v = 56,548.67 inches / minute (1 mile / 63360 inches) (60
min / hour)
<span>v = 53.55 mile / hour</span>
Answer:
20
Step-by-step explanation:
Since both triangles are similar, then the ratio is 18:6, which is 3:1
Triangle ABC is 3 times the size of DEC.
So, 1/3 of 30 is 10, and 30-10 is 20.
You are in debt for 15$, and someone pays it off by 10$. How deep are you now
