Find the length of the curve.x = 
y 3/2 - y 1/2 from x = 16 to x = 25
A. 20
B. 
C. 
D. 32
Answer: B
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The following table shows the stopping distance D, in feet, for a car that is traveling at a speed of S miles per hour. S 25 35 40 60 75 D 81 139 162 303 437? Use power regression to determine the speed of a car that requires 157 feet to stop. Round your answer to two decimal places. ?
A. 37.36 miles per hour B. 45.22 miles per hour C. 38.54 miles per hour D. 44.28 miles per hour
Use De Moivre's theorem to evaluate the expression. Write the result in standard form.(-5
+ 5i
)3
A. 15
+ 15i
B. 50
+ 50i
C. 5
+ 5i
D. 500
+ 500i
Solve the equation for the indicated variable. Assume no denominator is 0.M = ?r2hd, for r
A. r = 
B. r = 
C. r = ±
D. r = 
The matrix associated with the solution to a system of linear equations in x, y, and z is given. Write the solution to the system, if it exists.
A. infinitely many solutions of the form x = 2 + 3z, y = 4 + z, z = z B. infinitely many solutions of the form x = 2 - 3z, y = 4 - z, z = z C. infinitely many solutions of the form x = 2 + 3z, y = 4 - z, z = z D. infinitely many solutions of the form x = 2 - 3z, y = 4 + z, z = z