Write the number as a product of a real number and i. Simplify the radical expression.
A. i
B. -40i
C. 40i
D. ± 40
Answer: C
Mathematics
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Convert the mixed number to an improper fraction.5
A. 
B. 
C. 
D. 
Mathematics
Use the Pythagorean Theorem to find the missing length in the right triangle. Use a calculator to find square roots, rounding, if necessary, to the nearest tenth.
A. 405 cm B. 202.5 cm C. 13.5 cm D. 20.1 cm
Mathematics
Find the derivative of the function at the given point in the direction of A.
A. - 5.615234375e+09
B. - 
C. - 
D. - 5.37109375e+09
Mathematics
Use the arc length formula and the given information to find the indicated quantity.s = 4 m, r = 13 m; find ?
A. 
rad
B. 104 rad
C. 
rad
D. 52 rad
Mathematics