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.  

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Find the exact value of the following expression without using a calculator.csc 30°

A.
B.
C. 2
D.

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Convert to decimal notation.1.96 × 103

A. 58.8 B. 196 C. 1960 D. 19,600

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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