Write an equation that expresses the relationship. Use k for the constant of proportionality.r varies jointly as s and t and inversely as the square root of a.
A. r = 
B. r = 
C. r = 
D. r = 
Answer: B
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Determine whether the pair of lines are parallel, perpendicular, or neither.y = 
x - 64y = 16x + 3
A. parallel B. perpendicular C. neither
Solve the problem.Assume that the seed triangle of the Sierpinski ternary gasket has area A = 2. Find the area of the
obtained in Step 3 of the construction.
A. 
B. 
C. 
D. 
E. 
Make a bar graph using the given frequencies.The frequency distribution indicates the height in feet of persons in a group of 135 people. 
A. 
B. 
C. 
D. 
Suppose 100 people counted the number of cars passing an intersection in one hour. Due to error, not all people get the same value. The mean is 75 and the standard deviation is 1. Use the sketch to find how many people report the following. 
More than 76 cars
A. 16 people B. 14 people C. 84 people D. 15 people