Simplify.
- 
÷ 
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.The current in a simple electrical circuit is given by I = V/R, where I is the current in amperes, V is the voltage in volts, and R is the resistance in ohms. When V = 12 volts, what is a 12? resistor's tolerance for the current to be within 1 ± 0.01 amp?
A. 0.1% B. 1% C. 0.01% D. 10%
Solve the problem.To find the distance AB across a river, a distance BC = 805 m is laid off on one side of the river. It is found that B = 108.0° and C = 12.6°. Find AB.
A. 207 m B. 204 m C. 176 m D. 173 m
Add the numbers using the number line.10 + (-10)
A. -10 B. 10 C. 0 D. 20
Find the amount of sales tax or tax rate and the total cost. Round money answers to the nearest cent if necessary.Amount of sale: $960 Tax rate: 7%
A. $67.20, $1027.20 B. $672.00, $1632.00 C. $57.60, $1017.60 D. $76.80, $1036.80