Answer: Roberto has 2 DIMES and 6 NICKELS.
Step-by-step explanation:
<em><u>Equation 1:</u></em> 2 * 10 = 20 cents (Dimes)
<em><u>Equation 2:</u></em> 6 * 5 = 30 cents (Nickels)
<em> </em><u><em>Solution:</em></u><em> </em>30 + 20 = 50 cents
Answer:
In bold.
Step-by-step explanation:
6/6 = 9/a
So a = 9.
6/c = a/4.5
6/c = 9/4.5 = 2
So c = 3.
By similar triangles:
d/5 = 6/ (6+6+3)
d/5 = 6/15 = 2/5
So d = 2.
Also by similar triangles
b/5 = 12/15 = 4/5
So b = 4.
Step-by-step explanation:
Given that,
The diameter of the merry-go-round, d = 14 feet
Time taken, t = 6 seconds
Radius, r = 7 feet
The linear speed of the merry-go-round is given by :

Also,

Where
is the angular speed
So,

Hence, his linear and angular speeds are 7.33 m/s and 1.04 rad/s.