Use the Venn diagram below to find the number of elements in the region.
n(A ? B)
A. 14
B. 29
C. 21
D. 11
Answer: B
Mathematics
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According to the Empirical Rule, approximately __________ percent of data should fall within one standard deviation of the mean average for the data if the distribution is normal.
A. 95.5 B. 68.2 C. 99.7 D. it varies
Mathematics
Provide an appropriate response.A company repays a $50,000 loan by paying 10% of the outstanding loan each month. How much has the company paid back after two years?
Fill in the blank(s) with the appropriate word(s).
Mathematics
Find all values of ? in [0°, 360°) that satisfy the equation.cos ? = 
A. 225°, 315° B. 135°, 225° C. 45°, 225° D. 30°, 330°
Mathematics
Solve the system of equations by elimination.
A. (-3, 1) B. (1, -3) C. infinitely many solutions D. no solution
Mathematics