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3 years ago

Complete the proportion to compare the first two triangles

Mathematics

1 answer:

lukranit [14]3 years ago

6 0

12 and 13 because elmo

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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

4 years ago

A 50.0 gram sample decays to 25 grams in 14.4 seconds. What is its half-life?

PIT_PIT [208]

Answer:

The half life is 14.4 seconds because the half life is the time it takes for half of a sample to decay.

Hope this helps!

5 0

3 years ago

Solve all for brainiest

ankoles [38]

Answer:

I think 2 white 4 red and that's all I know or I think I know

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3 years ago

108.8+159.3 estimate

sergejj [24]

Answer:

268.1

Step-by-step explanation:

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2 years ago

Please solve this AC = ? cm

melomori [17]

I don't know i don't know i don't know 

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3 years ago