Referring to triangle ABC, find the area of the triangle.
?
?
Round to three significant digits.
?
A. 13.7 yd2
B. 13.5 yd2
C. 12.5 yd2
D. 13.3 yd2
E. 12.7 yd2
Answer: D
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Evaluate the integral.
A. 5 B. - 2 C. 2 D. 1
Solve the equation for the specified variable.
+ 
= 
for c
A. c = a + b
B. c = 
C. c = ab(a + b)
D. c = 
Solve the problem.A lumber yard has fixed costs of $6510.60 per day and variable costs of $0.6 per board-foot produced. Lumber sells for $2.40 per board-foot. How many board-feet must be produced and sold daily to break even?
A. 2170 board-feet B. 2411 board-feet C. 10,851 board-feet D. 3617 board-feet
Solve the problem.Dmitri needs 5 liters of a 36% solution of sulfuric acid for a research project in molecular biology. He has two supplies of sulfuric acid solution: one is an unlimited supply of the 45% solution and the other an unlimited supply of the 30% solution. How many liters of each solution should Dmitri use?
A. 45% solution: 3 liters; 30% solution: 2 liters B. 45% solution: 1.5 liters; 30% solution: 3.5 liters C. 45% solution: 2 liters; 30% solution: 3 liters D. 45% solution: 2.5 liters; 30% solution: 2.5 liters