Translate to a proportion and solve. When necessary, round to the nearest hundredth.What percent of 90 is 45?
A. 2%
B. 50%
C. 51%
D. 3%
Answer: B
Mathematics
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Use the Half-angle Formulas to find the exact value of the trigonometric function. cos
A. 
B. 
C. 
D. 
Mathematics
Find the exact value of the following expression without using a calculator.csc 30°
A. 
B. 
C. 2
D. 
Mathematics
Convert to decimal notation.1.96 × 103
A. 58.8 B. 196 C. 1960 D. 19,600
Mathematics
Use the formula for the sum of the first n terms of an arithmetic sequence to find the indicated sum.
A. -7050 B. -7100 C. -6875 D. -7250
Mathematics