Solve the problem.From a distance of x feet to a 190-meter-high radio tower, the angle of elevation is ? degrees. Then 
Use a reciprocal identity to rewrite this formula.
A. 190 cot ?
B. 
C. 190 sec ?
D. 
Answer: A
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For the given data value, find the standard score and the percentile.A data value 2.3 standard deviations below the mean.
A. z = -2.3; percentile = 1.07 B. z = -2.3; percentile = 98.93 C. z = -0.23; percentile = 40.13 D. z = 2.3; percentile = 98.93
17.8 ð 10-4 H =
a. 178 mH b. 17.8 mH c. 178 nH d. 1.78 mH e. 1.78 nH
Solve the problem.On a buying trip in Los Angeles, Rosaria Perez ordered 120 pieces of jewelry: a number of bracelets at $7 each and a number of necklaces at $12 each. She wrote a check for $1140 to pay for the order. How many bracelets and how many necklaces did Rosaria purchase?
A. 65 bracelets and 55 necklaces B. 60 bracelets and 60 necklaces C. 70 bracelets and 50 necklaces D. 55 bracelets and 65 necklaces
Solve the problem.The weight of a body above the surface of the earth is inversely proportional to the square of its distance from the center of the earth. What is the effect on the weight when the distance is multiplied by 4?
A. The weight is divided by 16. B. The weight is multiplied by 16. C. The weight is multiplied by 4. D. The weight is divided by 4.