We are just starting this section, and I'm confused...Please help me understand how to solve this inequality:
(one fifth r is less than two)
1/5r < 2
Also, simplify: (the #s are exponents)
z3 . z3
x12/x3
By 1/5r you mean r/5 or 1/(5r)?
z^3 . z^3 = z^6
x^12/x^3 = x^9
If you mean r/5<2, multiply each side by 5, leaving you with r<10. If you mean 1/(5r)<2, multiply each side by 5r, leaving you with 1<10r. Then divide each side by 10 and r>1/10.