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Alex_Xolod [135]
3 years ago
11

Negative vectors

Mathematics
2 answers:
Evgen [1.6K]3 years ago
6 0

Answer:

\large\boxed{\vec{w}-\vec{z}=}\\\boxed{\vec{v}-\vec{w}=}

Step-by-step explanation:

\vec{a}=,\ \vec{b}=\\\\\vec{a}-\vec{b}=

\vec{w}=\\\\\vec{z}=\\\\\vec{w}-\vec{z}==\\\\\vec{z}-\vec{w}==\\\\\\\text{You could use}\\\\\vec{z}-\vec{w}=-(\vec{w}-\vec{z})=-==

Lilit [14]3 years ago
3 0
First you write what the vectors are, then you subtract z from w by subtracting their corresponding values <-4-3,1-4>= <-7,-3>, then to get subtracting the next answer you subtract w from z which is <3--4,4-1> = <7,3>

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Which of these relations on the set {0, 1, 2, 3} are equivalence relations? If not, please give reasons why. (In other words, if
Delicious77 [7]

Answer:

(1)Equivalence Relation

(2)Not Transitive, (0,3) is missing

(3)Equivalence Relation

(4)Not symmetric and Not Transitive, (2,1) is not in the set

Step-by-step explanation:

A set is said to be an equivalence relation if it satisfies the following conditions:

  • Reflexivity: If \forall x \in A, x \rightarrow x
  • Symmetry: \forall x,y \in A, $if x \rightarrow y,$ then y \rightarrow x
  • Transitivity: \forall x,y,z \in A, $if x \rightarrow y,$ and y \rightarrow z, $ then x \rightarrow z

(1) {(0,0), (1,1), (2,2), (3,3)}

(3) {(0,0), (1,1), (1,2), (2,1), (2,2), (3,3)}

The relations in 1 and 3 are Reflexive, Symmetric and Transitive. Therefore (1) and (3) are equivalence relation.

(2) {(0,0), (0,2), (2,0), (2,2), (2,3), (3,2), (3,3)}

In (2), (0,2) and (2,3) are in the set but (0,3) is not in the set.

Therefore, It is not transitive.

As a result, the set (2) is not an equivalence relation.

(4) {(0,0), (0,1), (0,2), (1,0), (1,1), (1,2), (2,0), (2,2), (3,3)}

(1,2) is in the set but (2,1) is not in the set, therefore it is not symmetric

Also, (2,0) and (0,1) is in the set, but (2,1) is not, rendering the condition for transitivity invalid.

5 0
3 years ago
(3x+4)(x-2)<br> A.3x^2-2x-8<br> B.x-8<br> C.3x-2x-8<br> D.3x^2+2x+8
vlada-n [284]

Answer:

A

Step-by-step explanation:

im smart ツ

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3 years ago
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Answer:

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Step-by-step explanation:

To solve this, you need to divide by <u>distance needed to travel by the speed</u>

600/48 is equal to 12.5 hours.

.5 hours is equal to 30 mins because 60mins times .5 is 30 minutes, therefore <u>the final answer is 12.5 hours</u>

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The Last customer of the day is a loyal customer who brings in a $15.00 off coupon. She purchases 2 paint brushes ($21), one doz
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I think $21 or $7.88

Step-by-step explanation:

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