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Common Core Standard HSN-CN.A.3 Questions

(+) Find the conjugate of a complex number; use conjugates to find moduli and quotients of complex numbers.

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Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Given z=8-2i, find |z|.
  1. 217
  2. 215
  3. 68
  4. 60
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Evaluate. 4i7-3i
  1. 2029i
  2. -310+710i
  3. 17-43i
  4. -629+1429i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
What is the complex conjugate of -250+81i?
  1. -250-81i
  2. 250-81i
  3. -250+81i
  4. 250+81i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Divide. -10+3i2-8i
  1. 1115+3730i
  2. -1117-3734i
  3. -5-38i
  4. 117-3734i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Find the modulus of -3i.
  1. -3
  2. 3
  3. -3
  4. 3
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Divide the complex numbers. -13+i4+4i
  1. Undefined
  2. -134+14i
  3. -32+74i
  4. -74+74i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Find the quotient. 8i-1+3i
  1. 12-4i5
  2. -12+4i-5
  3. -1+8i3
  4. 1+8i-3
  5. 5i
  6. -5i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Find the quotient. 6-4i
  1. -3i
  2. 3i
  3. -2i3
  4. 2i3
  5. 3i2
  6. -3i2
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