Write true or false for the statement.A scalene triangle has two angles of equal measures.
A. True
B. False
Answer: B
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Round the divisor and dividend to one nonzero digit to find the estimated quotient. Then find the exact quotient.
A. 400; 408 B. 200; 400 r8 C. 400; 400 r8 D. 600; 408
Graph the function with a graphing utility.y = x2 + 2x - 7
A. 
B. 
C. 
D. 
Solve the problem.A freight train leaves a station traveling at 32 km/h. Two hours later, a passenger train leaves the same station traveling in the same direction at 52 km/h. How long does it takes the passenger train to catch up to the freight train?
A. 2.2 hr B. 3.2 hr C. 4.2 hr D. 5.2 hr
Solve the problem.The intensity of light I at time t hours after sunrise and at a depth of x feet below the ocean surface is given by I(x,t) = Ioe-kx sin3
,where D is the length of daylight in hours, Io is the intensity of light on the surface of the water at midday, and k is a positive constant. Assume D = 14, Io = 50, and k = 0.006. In a study of the effect of light on ocean plants, a scientist needs to determine the minimum depth x at which a plant would never at any time be exposed to an intensity of light greater than 25. What is this minimum depth?
A. 374 ft B. 108 ft C. 76 ft D. 116 ft