Use a calculator to find the function value to four decimal places.sin 54°20'
A. 1.3934
B. 0.5588
C. 0.5831
D. 0.8124
Answer: D
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At one high school, students can run the 100-yard dash in an average of 15.2 seconds with a standard deviation of 0.9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are:Less than 15.2 seconds
A. 34% B. 68% C. 50% D. 16%
Use an identity to find the value of the expression. Do not use a calculator.tan 70° - 
A. Undefined B. 0 C. 70 D. 1
Solve the problem.The transverse (vertical) displacement of a traveling wave on a stretched string is represented by the equation 
Find the period, amplitude, and phase shift of this function, given that 
and 
A. 1, 2, 2.5 B. 3, 2, -2.5 C. 1.00, 2, 2.50 D. ?, 2, -2.5
Solve the problem.It is determined that 25% of the student body of Piper School attended an 
assembly. If 144 students attended the assembly, how many students are enrolled at the school?
A. 573 B. 580 C. 576 D. 588