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siniylev [52]
2 years ago
13

80

Mathematics
1 answer:
dalvyx [7]2 years ago
3 0

Answer:

38 is the correct solution

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Let Z={a,c,{a,b}}. What is |Z|?
Lina20 [59]

Z=\{a,c,\{a,b\}\}

\boxed{|Z|=3} (treat \{a,b\} as one element of Z)

The power set of Z is

\boxed{2^Z=\bigg\{\{\},\{a\},\{c\},\big\{\{a,b\}\big\},\{a,c\},\big\{a,\{a,b\}\big\},\big\{c,\{a,b\}\big\},\big\{a,c,\{a,b\}\big\}\bigg\}}

1. \{a,c\}\subseteq Z is true because both a\in Z and c\in Z.

2. a\in Z is true.

3. \{c\}\subseteq Z is true (same reason as part 1).

4. \{c\}\in Z is false because Z does not contain the set \{c\}, rather just the element c itself.

5. b\in Z is false because the element b on its own simply is not in Z. That b\in\{a,b\} does not mean b\in Z, but that b belongs to a subset of Z.

6. \{a,b\}\in Z is true.

6 0
3 years ago
Jacob deposited $75 into his banking account on Tuesday. What integer represents his account on Tuesday?
Romashka-Z-Leto [24]
Positive 75 I believe
6 0
3 years ago
What are the values for the coefficients and constant term of 0 = 2 + 3x2 - 5x?
pav-90 [236]

Answer:

Step-by-step explanation:

a=3

b=-5

c=2

7 0
3 years ago
Five less than three times a number
Radda [10]

That would turn into 3x-5

4 0
3 years ago
Simplify (8j3 + 5j2 – 3) – (5j3 + 7j2 – 12j + 7) ...?
Free_Kalibri [48]
The answer to the problem is:

<span>8j^3 + 5j^2 - 3 - 5j^3 - 7j^2 + 12j - 7
 </span>
<span>3j^3 - 2j^2 + 12j - 10 
</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!


5 0
3 years ago
Read 2 more answers
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