For the given polar equation, write an equivalent rectangular equation.r = cos ?
A. (x + y)2 = y
B. x2 + y2 = x
C. (x + y)2 = x
D. x2 + y2 = y
Answer: B
Mathematics
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Solve the problem. Round your answer to the nearest tenth.A person is pulling a freight cart with a force of 44 pounds. How much work is done in moving the cart 60 feet if the cart's handle makes an angle of 19° with the ground?
A. 2496.2 ft-lb B. 859.5 ft-lb C. 2561.6 ft-lb D. 85.9 ft-lb
Mathematics
Find the sign of the following.sec (-?), given that ? is in the interval (180°, 270°).
A. negative B. positive
Mathematics
Find the product.(5m2z4)(3m3z2)
A. 15mz5 B. 15m5z C. 15mz6 D. 15m5z6
Mathematics
Find the slope and y-intercept of the line.x + y = -5
A. slope = 0; y-intercept = -5 B. slope = -1; y-intercept = -5 C. slope = 1; y-intercept = -5 D. slope = -1; y-intercept = 5
Mathematics