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Marta_Voda [28]
3 years ago
12

2.5 Refer to Exercise 2.4. Use the identities A = A ∩ S and S = B ∪ B and a distributive law to prove that a A=(A∩B)∪(A∩B). b If

B⊂AthenA=B∪(A∩B). c Further, show that ( A ∩ B ) and ( A ∩ B ) are mutually exclusive and therefore that A is the union of two mutually exclusive sets, (A ∩ B) and (A ∩ B). d AlsoshowthatBand(A∩B)aremutuallyexclusiveandifB⊂A,Aistheunionoftwo mutually exclusive sets, B and (A ∩ B)

Mathematics
1 answer:
natka813 [3]3 years ago
5 0

Answer:

All identities proved

Step-by-step explanation:

The step by step proving using the distributive law property is as shown in the attachment.

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anzhelika [568]

The thirty-second term is 143

Further explanation:

As it is already given that the given sequence is an arithmetic sequence

We have to find the common difference first

So,

a_1=-12\\a_2=-7\\a_3=-2\\a_4=3

d=a_2-a_1=-7-(-12)=-7+12=5\\a_3-a_2=-2-(-7)=-2+7=5

The common difference is 5.

And first term is -12

The explicit formula for arithmetic sequence is:

a_n=a_1+(n-1)d\\Here,\\a_n\ is\ nth\ term\\a_1\ is\ first\ term\\d\ is\ common\ difference

Putting the values in the formula

a_n=-12+(n-1)(5)\\a_n=-12+5n-5\\a_n=-17+5n

Putting n=32 in explicit formula

a_{32}=-17+5(32)\\=-17+160\\=143

The thirty-second term is 143

Keywords: Common difference, Arithmetic Sequence

Learn more about arithmetic sequence at:

  • brainly.com/question/10879401
  • brainly.com/question/10940255

#LearnwithBrainly

6 0
2 years ago
Find the center and radius of this circle: (x+2)^2 + (y-3)^2 =100
Flauer [41]

Answer:

center:-2,3

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Step-by-step explanation:Happy to help :)

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Phillip claimed that the expression − p + 5 + p is positive for any value of p. Determine whether Phillip’s statement is always
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Answer:

always true.

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8 0
2 years ago
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notka56 [123]

Answer:

8) 10°

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Step-by-step explanation:

8) The three sides of the given triangle are equal. Hence, the triangle is an equilateral triangle, hence each angle will be 60°.

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9) The three angles of the given triangle are equal. Hence, the triangle is an equilateral triangle, hence each side will be equal.

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10) Δ KLM is equilateral, so, KN will bisect ∠ MKL. So, ∠ NKL = 30°

Hence, 3x = 30°

⇒ x = 10°

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Again, ∠ X is given to be 60°.

Therefore, each angle is 60°.

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Answer:

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Step-by-step explanation:

1.584 = 3.96 × 0.4

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