Simplify.i8
A. i
B. -1
C. -i
D. 1
Answer: D
Mathematics
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Solve the problem.A line from the top of a cliff to the ground passes just over the top of a pole 7.0 ft high and meets the ground at a point 5.0 ft from the base of the pole. If the point is 78 ft from the base of the cliff, how high is the cliff? Round to the nearest unit.
A. 546 ft B. 7 ft C. 2730 ft D. 109 ft
Mathematics
Solve the system by graphing.3x + 2y = 28-2x + 3y = 16
A. (8, 4) B. (3, 22) C. (4, 8) D. No solution
Mathematics
Find y".y = 5 sin(2x + 8)
A. -20 sin(2x + 8) B. -20 cos(2x + 8) C. -10 sin(2x + 8) D. 10 cos(2x + 8)
Mathematics
Show that the equation is not an identity by listing the value(s) of the variable from among 0, 
, 
, and - 
for which the equation is false.sin 2? = 2 sin ?
A. 
, 
, and - 
B. 
and - 
C. 
, 
, and 0
D. 
and 0
Mathematics