Solve.A hardware store took an inventory of its paint. They had 2.5 times as many gallons of red paint as of blue paint. They had 10 more gallons of yellow paint than red paint. Taken together, the red, yellow and blue paint came to 322 gallons. How many gallons of blue paint were there? Round to the nearest tenth of a gallon.
A. 16.8 gallons
B. 83.2 gallons
C. 52.0 gallons
D. 72.0 gallons
Answer: C
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Evaluate the integral by using a substitution prior to integration by parts.
A. x[cos (ln x) + sin (ln x)] + C
B. 
[cos (ln x) - sin (ln x)] + C
C. x cos (ln x) + sin (ln x)+ C
D. 
[cos (ln x) + sin (ln x)] + C
An object moves in simple harmonic motion described by the given equation, where t is measured in seconds and d in meters . Find the maximum displacement, the frequency, and the time required for one cycle.d = 3 cos 5?t meters
A. displacement = 3 meters; period = 
? seconds; f = 
oscillations/second
B. displacement = -3 meters; period = 
seconds; f = 
oscillations/second
C. displacement = 3 meters; period = 
seconds; f = 
oscillations/second
D. displacement = 3 meters; period = 
seconds; f = 
oscillations/second
Write a system of equations associated with the augmented matrix. Do not try to solve.
= 
A. 2x + y = -3 x + 2y = 2 -5x - 5y = 2 B. 2x + y + z = -3 x - 5y = 2 C. 2x = -3 x + y = 2 -5x - 5y = 2
Use a calculator to give the value to the nearest degree.? = cos-1(-0.3907)
A. 115° B. 110° C. 113° D. -67°