Multiply and simplify.
? 
A. 1
B. x - y
C. x2 - y
D. 
Answer: A
Mathematics
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Determine whether the following is a difference of squares.x2 - 4y2
A. No B. Yes
Mathematics
Solve.A rock falls from a tower that is 78.4 m high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground (h=0)? Round to the nearest tenth.
A. 8.9 sec B. 1300 sec C. 4 sec D. 16 sec
Mathematics
Solve the problem.The total resistance in this electric circuit is given by the formula below. Find the total resistance for 
, 
, 
ohms.Total resistance = 
.
style="vertical-align: 0.0px;" height="84" width="160" /> A. 8.50 ohms B. 7.10 ohms C. 5.48 ohms D. 10.60 ohms
Mathematics
Find the corresponding angle measure in radians.-45°
A. 
B. 
C. 
D. 
Mathematics