Subtract. Combine like terms, and write the answer in descending order.(7z + 5z2 + 6) - (10z2 - 1)
A. -5z2 + 8z + 6
B. 15z2 + 7z + 5
C. -5z2 + 7z + 7
D. 15z2 + 8z + 6
Answer: C
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Rewrite the expression using the indicated property of real numbers.Commutative property of addition:
7 + 4
A. (4)(7) B. 4 + 7 C. 7 + 4 D. (7)(4)
Two sides and an angle are given. First, determine whether the given information results in no triangle, one triangle, or two triangles. Solve each resulting triangle.a = 26, b = 9, B = 10°
A. one triangle; A = 149.89°, C = 20.11°, c = 17.82 B. one triangle; A = 30.11°, C = 139.89°, c = 33.39 C. two triangles; A1 = 30.11°, C1 = 139.89°, c1 = 33.39 or A2 = 149.89°, C2 = 20.11°, c2 = 17.82 D. no triangle
Classify the angle as acute, right, obtuse, or straight.
A. right B. straight C. acute D. obtuse
Find all cube roots of the complex number. Leave answers in trigonometric form.5 - 5i
A. 
cis 80°, 
cis 200°, 
cis 320°
B. 
cis 100°, 
cis 220°, 
cis 340°
C. 
cis 60°, 
cis 180°, 
cis 300°
D. 
cis 100°, 
cis 220°, 
cis 340°