Write the expression in the standard form a + bi.3i(3 - 4i)

A. 9i + 12i2
B. 12+ 9i
C. 9i- 12
D. 9i - 12i2

Answer: B

Mathematics

Divide, if possible. If not possible, write "not defined."

A. Not defined B. 0 C. 1 D. 2

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Mathematics

Decompose v into two vectors v1 and v2, where v1 is parallel to w and v2 is orthogonal to w.v = i - 4j,w = 3i + j

v₁ = -

i -

j, v₂ =

i -

B. v₁ = -

i -

j, v₂ =

i -

j
C. v₁ = -

i -

j, v₂ = -

i -

j
D. v₁ = -

i -

j, v₂ =

i -

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Mathematics

Decide whether the equation is an identity, a conditional equation, or a contradiction. Give the solution set.24(x - 3) = 2(12x - 5) - 62

A. Contradiction; ? B. Conditional; {-72} C. Conditional; {0} D. Identity; {all real numbers}

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Mathematics

Tell which set or sets the number belongs to: natural, whole, integer, rational, irrational, real.

A. real, rational B. real, integer C. real, whole D. real, irrational

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Mathematics