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larisa [96]
3 years ago
11

Can you help me with this problem I'm doing school virtually and I don't know what to do on this.

Mathematics
1 answer:
Lapatulllka [165]3 years ago
4 0

Answer:

d <u>></u> 9

Step-by-step explanation:

An easy way to do these questions is to treat the >/</<u>></u>/<u><</u> symbols as if they were an equals sign.

So for this question, pretend it is d+13=22 then take away 13 from both sides which will give you d=9, then after that you'll just switch the symbol back and write your answer as d <u>></u> 9.

Hope this helps :)

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How many equivalence relations are there on the set 1, 2, 3]?
Alex787 [66]

Answer:

We need to find how many number of equivalence relations are on the set {1,2,3}

A relation is an equivalence relation if it is reflexive, transitive and symmetric.

equivalence relation R on {1,2,3}

1.For reflexive, it must contain (1,1),(2,2),(3,3)

2.For transitive, it must satisfy: if (x,y)∈R then (y,x)∈R

3. For symmetric, it must satisfy: if (x,y)∈R,(y,z)∈R then (x,z)∈R

Since (1,1),(2,2),(3,3) must be there is R, (1,2),(2,1),(2,3),(3,2),(1,3),(3,1). By symmetry,

we just need to count the number of ways in which we can use the pairs (1,2),(2,3),(1,3) to construct equivalence relations.

This is because if (1,2) is in the relation then (2,1) must be there in the relation.

the relation will be an equivalence relation if we use none of these pairs (1,2),(2,3),(1,3) . There is only one such relation: {(1,1),(2,2),(3,3)}

we can have three possible equivalence relations:

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

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

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

6 0
3 years ago
Use the angle relationship in the figure below to solve for x. Assume that lines a and b are parallel and the given angles are g
Daniel [21]

9514 1404 393

Answer:

  x = 5°

Step-by-step explanation:

The marked angles are "alternate exterior angles," hence congruent.

  2x +90° = x +95°

  x = 5° . . . . . . . . . . . . subtract (x+90°) from both sides

4 0
2 years ago
40 points and brainliest get it before it gets claimed.
denis23 [38]

Answer:

yuh

Step-by-step explanation:

4 0
3 years ago
HELPPP PLEASE ASAP !!!!!!!!!!
Vikki [24]

Answer:

the triangle flipped over the y axis

6 0
3 years ago
Read 2 more answers
What is in simplest form? : 2/9+4/9
SIZIF [17.4K]
2/9 + 4/9 
first add them and then divide to get the simplest form ....
=6/9 
=2/3 ...

Hope it helps !!!
4 0
3 years ago
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