The sun is 20º above the horizon. Find the length of a shadow cast by a park statue that is 30 feet tall. Approximate the answer to two decimal places.
?
A. 82.42 ft
B. 84.42 ft
C. 85.42 ft
D. 83.42 ft
E. 86.42 ft
Answer: A
Mathematics
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Two impedances, Z1 and Z2, are connected in parallel. If Z1 = 6/-62è and Z2 = 5/36, what is the equivalent impedance?
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Mathematics
Solve the problem.The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. By using linear regression, the following equation is obtained: 
where x is number of hours studied and y is score on the test. Use this equation to predict the score on the test of a student who studies 12 hours. 
A. 85.3 B. 80.1 C. 75.1 D. 85.1
Mathematics
Represent the quantity by an integer.22° below zero
A. 22 B. -22
Mathematics
Simplify 
if 
.
What will be an ideal response?
Mathematics