Solve.The pressure in a hydraulic line increases from 50 psi to 68 psi. What is the percent increase in pressure?
A. 40%
B. 49%
C. 41%
D. 36%
Answer: D
Mathematics
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Find the acceleration of an object for which the displacement s (in m) is given as a function of the time t (in s) for the given value of t.s = 0.1(1 + 3t)4, t = 0.3 s
A. 4.3 ft/s2 B. 15.6 ft/s2 C. 3.3 ft/s2 D. 39.0 ft/s2
Mathematics
Evaluate the integral.
A. 
(sin7 x - sin9 x) + C
B. 
sin7 x - 
sin9 x + C
C. 
cos5 x - 
cos7 x + C
D. 
sin5 x - 
cos9 x + C
Mathematics
Multiply. Write the answer in lowest terms.
? 
A. 
B. 
C. 
D. 
Mathematics
Solve the system.
A. x = -2, y = 4, z = 3, w = -5 B. x = 3, y = 0, z = -1, w = 0 C. x = 4, y = -2, z = -7, w = -4 D. x = 4, y = -2, z = 1, w = -4
Mathematics