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3 years ago

3(-6+8)=(3x-6)+(3x8)

Mathematics

2 answers:

Likurg_2 [28]3 years ago

8 0

Answer:

= 6

Step-by-step explanation:

= 3 (-6 + 8)

= (3 * -6) + (3 * 8)

= -18 + 24

= 6

kicyunya [14]3 years ago

5 0

Answer:

$x = 12$

the answer is attached to the picture

hope this helps you.

Brainliest plzz

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Prove the following statement. Assume that all sets are subsets of a universal set U.

nadezda [96]

Answer:

O U ⊆ A ∪ B True

O U ⊆ A ∩ B False

O A ∪ B ⊆ U True

O B ⊆ U True

O A ⊆ U True

O A ∩ B ⊆ U True

Step-by-step explanation:

To prove the first part

$\text{If} \,\,\,\,\,\, A^{c} \subseteq B \,\,\,\,\,\text{then} \,\,\,\,\, A \cup B = U$

Remember that any set is a subset of the universal set. Therefore it is true that

$A \cup B \subseteq U$

Now, given any $x \in U$ it is true that

$x \in B \,\,\,\, \text{or} \,\,\,\, x \notin B$

Now according to the information given initially

$\text{If} \,\,\,\,\, x \notin B \,\,\,\,\, \text{then} \,\,\,\,\, x \notin A^{c}$

And then you know that

$\text{If} \,\,\,\,\, x \notin A^{c} \,\,\,\,\,\text{then} \,\,\,\,\,\,\, x \in A$

Therefore $U \subseteq A \cup B$ and using double inclusion

$U = A \cup B$ .

Now using the information just exposed

O U ⊆ A ∪ B True

O U ⊆ A ∩ B False

O A ∪ B ⊆ U True

O B ⊆ U True

O A ⊆ U True

O A ∩ B ⊆ U True

4 0

3 years ago

Help me please I'm stuck!

alisha [4.7K]

My teachers taught me a trick make a C from the top to bottom

so 5 1/2 would be

5 times 1 + 2 so denominator stays the same so it 7/2.

bottom one is 22/4

make a C from top to bottom and multiply outer number to top add the bottom to that then keep denominator the same.

Hope i helped.

3 0

3 years ago

Expand and simplify (2t-3)^2

Greeley [361]

(2t-3)²=4t²+9-(2t.(-3))=4t²+9-6t

8 0

3 years ago

(—225) = [(—40) - (—8)]

qaws [65]

Answer:

okay I don't have to work at rito pag nasagutan the gathered from the story is about

7 0