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Magazine Problem 13
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. $$15(-1)$$
Problem 14
Write as an equivalent addition; then evaluate. $$-13-28$$
Problem 14
Prep Exercise 3 In the formula \(V=i r,\) what does each variable represent? It is suspected that an incorrect resistor was put into a circuit. The correct resistor should be 12 ohms. A voltage measurement is taken and found to be \(-60\) volts. The current is measured to be \(-10\) amps. Is the resistor correct? Explain.
Problem 14
Adding integers with different signs is similar to reconciling assets and debts. $$-25+16$$
Problem 14
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. $$12(-2)$$
Problem 15
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. $$-19(-20)$$
Problem 15
For Exercises \(1-74,\) simplify. $$3+\left(4-6^{2}\right)$$
Problem 15
Pre Exercise 4 What is an average rate? The elevator in the Empire State Building travels from the lobby to the 80 th floor, a distance of about 968 feet, in about 44 seconds. What is the average rate of the elevator?
Problem 15
Write as an equivalent addition; then evaluate. $$-4-(-19)$$
Problem 15
Adding integers with different signs is similar to reconciling assets and debts. $$-21+35$$
