AzizHusain

All you have to do is divide 21 rad/s by 2pi --> 21 rad/s / 2pi = 3.342253805 rev/s.

1/4 of 400 = 0.25*400 = 100. You can think of this as dividing 400 in to 4 equal pieces --> 400/4 = 100.

(1.202x10^-36)/576 = 0.0000000000000000000000000000000000000020868055555555555555555556 or 2.09 X 10^-39.

We multiply them because it says represents the product of.

Another fun and awesome post, Rosala! 

I think jobs! The unemployment rates are pretty high here at least (college grads have trouble finding work and also middle-aged people) and this is likely affecting most countries. All this globalization is crazy! 

I get the longest holiday during summer which will end exactly on October 2nd. (first day of classes!!!) Speaking of jobs, I am also looking for jobs/internships!! I have applied to several and hopefully will have something to do for the rest of the summer and also during the academic year!!

Thanks Melody, I edited the answer using \\\\. Looks better now!

Also, thanks Alan. I changed it from 8/20 to -4/20. 

Oh, looks great and nice stamp! Yes, the link works, too! Thanks, rosala! 

x = 0.8x + 72

Subtract 0.8x from both sides: 0.2x = 72

x = 72/0.2 

x = 360.

***I assumed both were the same variable until I realized one is italicized...what is the non-italicized x?***

-2(x+3) = -2(x+1) -4 

Distribute: -2x - 6 = -2x -2 - 4

Collect like terms: -2x - 6 = -2x - 6

x can be any real number --> all real numbers.

3x - 5 = 2x + 6

Subtract 2x from both sides and add 5 to both sides.

3x - 2x = 6 + 5

x = 11.