91Ó°ÊÓ

Adding integers with different signs is similar to reconciling assets and debts. $$28+(-18)$$

For Exercises \(1-74,\) simplify. $$-5+(-4)^{2}-1$$

Prep Exercise 3 In the formula \(V=i r,\) what does each variable represent? The voltage in an electrical circuit measures \(-220\) volts. If the resistance is 5 ohms, find the current.

Adding integers with different signs is similar to reconciling assets and debts. $$17+(-5)$$

Prep Exercise 3 In the formula \(V=i r,\) what does each variable represent? The voltage in an electrical circuit measures \(-240\) volts. If the resistance is 30 ohms, find the current.

Prep Exercise 1 When multiplying two numbers that have the same sign, the result is ____. Prep Exercise 2 When multiplying two numbers that have different signs, the result is ____. multiply. $$-4 \cdot 0$$

Prep Exercise 1 When multiplying two numbers that have the same sign, the result is ____. Prep Exercise 2 When multiplying two numbers that have different signs, the result is ____. multiply. $$15(-1)$$

For Exercises \(1-74,\) simplify. $$9^{2}-6 \cdot(-4) \div 8$$

Adding integers with different signs is similar to reconciling assets and debts. $$-34+20$$

Prep Exercise 3 In the formula \(V=i r,\) what does each variable represent? A technician is told that the resistance in an electrical circuit is 40 ohms. The voltage measures \(-120\) volts, and the current measures \(-4\) amps. Was the technician told the correct resistance? Explain.