Add the given pair of complex numbers geometrically.z1 = -4 - 4i, z2 = -9i
A. -13 - 4i
B. -4 - 13i
C. -4 + 5i
D. -17i
Answer: B
Mathematics
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Provide an appropriate response.In oblique triangle ABC, find the indicated part. Round to nearest 0.1°. Find B if A = 106°, a = 3.5 m, and b = 3.0 m.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Evaluate the algebraic expression for the given value or values of the variable(s).
;
x = 7
A. 
B. 6
C. 3
D. 4
Mathematics
Use half-angle formulas to find the exact value for the following:
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
Find the direction angles of the vector. Round to the nearest degree, if necessary.v = 2i - 3j - 4k
A. ? = 68°, ? = 124°, ? = 138° B. ? = 65°, ? = 129°, ? = 147° C. ? = 61°, ? = 137°, ? = 166° D. ? = 67°, ? = 125°, ? = 140°
Mathematics