How many different six-letter arrangements can be made from the letters in the word CIRCLE?

A) 180
B) 360
C) 720
D) 1440


B) 360

Mathematics

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Solve the problem.In order for a chemical reaction to take place, the Fahrenheit temperature of the reagents must be at least . Find the Celsius temperatures at which the reaction may occur. 

A. C < 244.71? B. C ? 47.88? C. C ? 47.88? D. C ? 244.71?

Mathematics

A matrix has an inverse if and only if its determinant does not equal 0. Determine whether the given matrix has an inverse.

A. No B. Yes

Mathematics

Solve the problem.78 is 10% of what?

A. 780 B. 78 C. 7.8 D. 7800

Mathematics

Write the number in scientific notation.A mountain's peak is 21,700 feet above sea level.

A. 2.17 × 104 B. 2.17 × 10-5 C. 2.17 × 106 D. 2.17 × 105

Mathematics