Solve the problem.Power is the time rate of doing work and is commonly measured in watts. Power is given by the formula 
where P is power, W is work (in joules), and t is time in seconds. If 900 watts of power are used in 10 seconds, how much work (in joules) was done?
A. 90 joules
B. 9 joules
C. 900 joules
D. 9000 joules
Answer: D
Mathematics
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Convert to radian measure. Round to two decimal places.-284.1°
A. -4.96 B. -4.95 C. -4.67 D. -4.68
Mathematics
Use the properties of exponents to simplify the expression. Write with positive exponents.(r1/5 ? s1/5)2
A. r1/25s1/25 B. r2/5s2/5 C. r1/10s1/10 D. r2s2
Mathematics
Multiply.(-5)(-6)
A. 30 B. -30 C. 11 D. -11
Mathematics
Use both the addition and multiplication properties of inequality to solve the inequality. Graph the solution set on a number line.
(2x - 1) < -2
A. (-?, - 1)
B. [1, ?)
C. (-?, - 1]
D. (-?, 1)
Mathematics