Solve the problem.From a distance of x feet to a 110-meter-high radio tower, the angle of elevation is ? degrees. Then 
Use a reciprocal identity to rewrite this formula.
A. 110 cot ?
B. 
C. 110 sec ?
D. 
Answer: A
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Use the quadratic formula to find the exact solutions.x2 = 15 + 9x
A. 
B. 9 ± 
i
C. 9, 15
D. 
± 
i
Determine if the statement is a proportion.I. 
II. 
A. I is a proportion, II is not a proportion. B. I is not a proportion, II is a proportion. C. I and II are both proportions. D. Neither I nor II are proportions.
Solve the problem.One option in a roulette game is to bet on red. (There are 18 red compartments, 18 black compartments, and two compartments that are neither red nor black.) If the ball lands on red, you get to keep the src="https://sciemce.com/media/4/ppg__rrr0612191441__f1q39g4.jpg" alt="" style="vertical-align: -4.0px;" /> on red.
A. -$0.24
B. $0.24
C. $0.47
D. -$0.47
that you paid to play the game and you are awarded 
. If the ball lands elsewhere, you are awarded nothing and the 
that you bet is collected. Find the expected value for playing roulette if you bet
In 
, one side of 
is diameter 
while a second side is chord
src="https://sciemce.com/media/4/ppg__cognero__Section_6.4_Some_Constructions_and_Inequalities_for_the_Circle__media__ac794ca1-4a57-45f2-8549-15f9e1b02a5f.PNG" style="vertical-align: -2px;" />. If AC = PB = 5, find the length of chord 
.
What will be an ideal response?