I need solve this question MCQ of course calculus II

Q1 Q2 \\(\\) The point (5, - 1, - 7) is not the center \\(V) The geometric representation of the of the sphere represented by the equation equation -4x2 -4y =-12 x2 + 10x+ 12 -2y+z2 -142 =-74. is not a cylinder in R2. Select one: O True Select one: OFalse O True O False \\(\\) The vectors The angle O between the two vectors \\\\) Q3 u = and v= Q4 u = and U = is equal to are not orthogonal if and only if 0 = TI x =-136 Select one: Select one: O True O True O False O False \\(\\)Choose x such that the following two vectors are parallel 05 06 If a x i = 0 and a x j = 0, then u = and U = Select one: O a is equal to i + j None of the others O a cannot be determined O \\6 O a is equal to j x i O\\-3 O None of the others 0 \\(2 O a is equal to 0 O \\(3