Which of the following statements are true for all vectors a, b? A. ||a - - b||² B. a∙b=0⇒a=0 C. a. b = a parallel to b. = ||a||²+2a.b+ ||b||², or b = 0, |||a|| ||b||, a ‡ 0, b / 0 ⇒ 1. A and C only 2. B and C only 3. all of them ○ 4. C only ○ 5. B only O 6. A and B only 7. none of them ● 8. A only

Q: Evaluate if x=4,8,3,-2 ∑x ∑x+1 ∑(x+1) 3∑x - 4

A: Given that  if x=4,8,3,-2

Q: Then A-1 If A = 5 1 -16 -3 0 0 0 -1 0 w 00+ 4 -13

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Q: The only word that works to represent equality is the word "is." O True O False

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Q: Use the figure to answer the following questn when a || b 3 6. 5. 8 2.

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Q: Show by an example that (AB)" B™A".

A:

Q: Show that Hh - Va! 1 -1 can be written as hlVx+h x/x+h+V¤(x+h)

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Q: Let a = (-5, 5, 4) and 6 = (-1,-4, 5). (a) a × b x (41,-21,24) x (b) b × ā X = (c) (ã × b) × ã = (d)…

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Q: I (Inx)³ nx-X

A: Let u and v be the function of x  Then∫uvdx=u∫vdx-∫(dudx∫vdx)dx

Q: then A || -7 0 0 0 0 0 -8 0 0 0 0 -4 0 0 5

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Q: Let a, b, c ∈Z+.    If  a | b and a | c then a | ( b + c )  true or false?

A: Use the definition of divisibility, to express b and c in terms of a. a|b⇒b=maa|c⇒c=na Therefore,…

Q: So what do i put please be clear

A: Here given relation defined by for  Reflexivity check :C is reflexive real number , ,this is false.…

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Q: Suppose Var(X) = 43, Var(Y) = 36, and X and Y are independent. What is Var(.67X + .33Y)?

A: GivenX and Y are independentVar(X)=43Var(Y)=36

Q: Tell whether these pairs of expressions are equivalent  1.                 1/5 - x  and  x- 1/5 2.…

A: Topic = Algebra

Q: What is the relation between An B and AnB ? Justify your

A: