Factor the difference of squares.25rs2 - 144rt4
A. r(5s + 12t2)(5s - 12t2)
B. (5rs - 12rt2)2
C. (25rs + rt2)(s - 144t2)
D. r(5s + 12t2)2
Answer: A
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In the event of an emergency stop, the speed S, in miles per hour, of a car when brakes are applied can be calculated from the length L, in feet, of skid marks. The relationship is 
. Suppose skid marks are 67.40 feet long. Use functional notation to express the speed of the car, and then calculate that value.
?
A. 
miles per hour
B. 
miles per hour
C. 
miles per hour
D. 
miles per hour
Provide an appropriate response.Add the fractions and reduce: 
+ 
A. 
B. 
C. 
D. 
In the circuit shown below, X =
What will be an ideal response?
Let U = {1, 2, 3, 4, 5, 6, 7}, A = {1, 2, 3, 6}, B = {1, 2, 6, 7}, C = {3, 6, 7}. List all the members of the set.
?
?
A. {2, 4, 6} B. {1, 2, 6, 7} C. {1, 2, 3, 6} D. {4, 5, 6, 7} E. {6}