30% of 40 is found by 0.30 x 40
which equals 12, so $12 will be saved
Answer:
The radius of the can, rounded to the nearest hundredth, is 530.66.
Step-by-step explanation:
We want to do the reverse of the formula for <em>V</em>, which is pi(r)^2(h).
to isolate r.
Let's start by writing an equivalent equation to V = ![\pi](https://tex.z-dn.net/?f=%5Cpi)
<em>h</em> by solving for r
Now, substitute and solve for r
1014 * 3.14 / 6 = 530.66
Answer:
Radius r=0.30m, Velocity, v=36m/s
(a) angular speed w=
r
v
=
0.3
36
=120rad/s
(b) final angular speed w
′
=0
From rotational kinematics w
′
2
−w
2
=2αθ
0−14400=2α×40×2π
⇒α=
160π
−14400
=−28.6rad/s
2
'Distance covered
=40×2πr
=40×2π×0.3=75.39m
Answer:
D = 30*T, where D is the distance in miles and T is the time in seconds
Step-by-step explanation:
The speed of the powered scooter is 30 miles per second, so for each second, her distance will be 30 miles.
With that information, we can formulate an equation that shows her distance with relation to time:
Let's call her distance D, and the time she is traveling T
if in one second she travels 30 miles, in T seconds she will travel 30*T miles, and that is the distance she travelled, so the equation is:
D = 30*T.