Answer:
standard unit of measurement provides a reference point by which objects of weight, length or capacity can be described.
Answer:
3b+2
Explanation:
First your question has so many mistakes
What I understand
bracelets cost 4+5b
necklaces cost 8b+6
First we have to make an equaion
=(8b+6)-(4+5b)
simplify it
=8b+6-4-5b
=3b+2 Answer
Answer:

Explanation:
Potential Energy= Kinetic Energy
Let
be the value of Kinetic Energy.
We know that

Make
the subject of the formula to get speed at the bottom of the hill.

Answer is miles sir your welcome it was simple
Answer:
1.94601 rad/s
Explanation:
= Moment of inertia of carousel = 124 kgm²
= Angular speed of carousel = 3.5 rad/s
= Angular speed of person
r = Radius of carousel = 1.53 m
m = Mass of person = 42.3 kg
Moment of inertia of person

As the angular momentum is conserved in the system

The angular speed of the carousel after the person climbs aboard is 1.94601 rad/s