91Ó°ÊÓ

Find the reciprocal of each number, if it exists. $$ \frac{43}{-24} $$

Subtract. $$ 1.5-9.4 $$

Find the reciprocal of each number, if it exists. $$ -10 $$

List the factors in each expression. $$ 3(x+y) $$

Use a commutative law to write an expression equivalent to \(a b+5\).

Find the reciprocal of each number, if it exists. $$ -1.7 $$

Explain in your own words why the sum of two negative numbers is negative.

Write an equivalent expression without using grouping symbols. $$ -[5-6 x] $$

If the lengths of the sides of a square are doubled, is the area doubled? Why or why not?

Without performing the actual addition, explain why the sum of all integers from \(-10\) to 10 is \(0 .\)