Chapter 6.3A, Problem 18A

Write each of the following in simplest form using positive exponents in the final answer.

a. ${\left(\frac{1}{2}\right)}^3\cdot {\left(\frac{1}{2}\right)}^7$

b. ${\left(\frac{1}{2}\right)}^9÷{\left(\frac{1}{2}\right)}^6$

c. ${\left(\frac{2}{3}\right)}^5\cdot {\left(\frac{4}{9}\right)}^2$

d. ${\left(\frac{3}{5}\right)}^7÷{\left(\frac{3}{5}\right)}^7$