we are given
A cd has diameter of 120 millimeters
so, d=120mm
so, firstly, we will find radius
we can plug it
we know that
1mm=0.001m
so, we get
the angular speed is about 206 rpm
we know that
1 revolution =2pi radians
so, we get
now, we can change it into seconds
1 min =60 seconds
so, we get
now, we can find linear speed(v)
we can use formula
v=w*r
so, we can plug values
and we get
so, linear speed is 1.257 m/sec............Answer
The total change in temperature expected over the next 3 hours is 3 x 5° = 15°
I'm not sure which one you mean by x, but angles Q,S,L,T and R are all equal to 90
To solve this problem, you must use the Combination Formula:
Cr(n,r)=n! /r!(n-r)!
n: The number of things it can be chosen (n=6).
r: The number of things you choose (r=3).
!: The symbol of The Factorial Function, which means that descending numbers are multiplied.
In Combinations the order of the objects does not matter, so we have:
Cr(n,r)=n!/r!(n-r)!
C(6,3)=6!/3!(6-3)!
C(6,3)=6!/3!
C(6,3)= 6x5x4x3!/3x2x1x3!
C(6,3)=6x5x4/3x2x1
C(6,3)=120/6
C(6,3)=20
In how many ways can a student select any 3 books?
The answer is: In 20 different ways.
Answer:
2
Step-by-step explanation:
theres two numbers so i believe 2