What is the mathematical symbol of a belongs to both sets x and y

Answers

• Réponse publiée par: nelspas422

  a = x + y

  Step-by-step explanation: let a be the first letter of the alphabet. Equate them to the expression x + y.
• Réponse publiée par: Rosalesdhan

  answer A

  Step-by-step explanation:
• Réponse publiée par: 123gra

  2,3,and 5 are the wrong ones

  Step-by-step explanation:
• Réponse publiée par: snow01

  Hi! I can't type the fancy forms of R, Q, Z, and other groups, but I hope you understand what I mean by them.

  5 is an integer

  5 ∈ Z

  This shows that 5 is an element (∈) of the set of integers (Z)

  Y is a multiple of 10

  Y = 10k, k ∈ Z

  This means that Y = 10 x k, where k is an integer, which is the definition of a multiple.

  A belongs to both sets x and y

  We can use A ∈ (x ∩ y). [A is in the intersection of x and y, which means it belongs to both of them]

  We can also use (A ∈ x) ∧ (A ∈ y). The ∧ means "and", so this reads as "A is in x and A is in y".

  The values of y range feom -4 to 5

  -4 ≤ y ≤ 5

  The square of the difference of x and y is not more than 10

  (x-y)² ≤ 10

  Notice that "not more" translates to "less than or equal to", and not just "less than", since the square of the difference could be equal to 10.

  The square of a number is positive

  x² > 0

  Positive translates to "> 0". Interestingly enough, this statement is FALSE. Since x could be 0, x^2 could be 0, which is not positive.

  8 is an even number

  An even number means that it is a multiple of 2, so similar to earlier,

  8 = 2k, k ∈ Z

  7 is an odd number

  Odd numbers are just even numbers + / - 1, so we use:

  7 = 2k + 1, k ∈ Z

  1/4 is a rational number

  The set of rational numbers is Q, so

  1/4 ∈ Q

  Hope this helps!
• Réponse publiée par: shannel99

  A = x+y
  
  No explanation.