91Ó°ÊÓ

Subtract. $$ 0-9.09 $$

To the student and the instructor: Writing exercises, denoted by \([\%,\) are meant to be answered using sentences. Because answers to many writing exercises will vary, solutions are not listed at the back of the book. Charlie insists that \(15-4+1 \div 2 \cdot 3\) is \(2 .\) What error is he making?

Translate to an algebraic expression. The quotient of the sum of two numbers and their difference

Translate to an algebraic expression. Three times the sum of the cubes of two numbers

Divide. $$ \frac{-28}{-7} $$

Simplifying \(\left(a^{m}\right)^{n}\) $$ \left(a^{3}\right)^{2} $$

Translate to an algebraic expression. $$ \\{x | x=2 n, n \text { is an integer }\\} $$

Divide. $$ \frac{-100}{25} $$

Solve and check. The symbol \(\sqsubseteq\) indicates an exercise designed to be solved with a calculator. $$ 4.23 x-17.898=-1.65 x-42.454 $$

Calculate using the rules for order of operations. If an expression is undefined, state this. $$ 19-\left(4+2 \cdot 3^{2}\right) $$