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Akimi4 [234]
3 years ago
7

PLEASE HELP ASAP!!!!!!!!!!! Giving BRAINLIEST!!!

Mathematics
1 answer:
Anna [14]3 years ago
5 0
The answer that I got was 7
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Identify the error or errors in this argument that supposedly shows that if ∃xp (x) ∧ ∃xq(x) is true then ∃x(p (x) ∧ q(x)) is tr
Ymorist [56]

The mistake lies in steps 3 and 5.

In fact, you know that there exists some element that satisfies p(x), and some element that satisfies q(x), but you can't assume that the same element satisfies p(x) and q(x) at the same time.

So, you are only allowed to say

p(c) existential instantiation from (2)

q(d) existential instantiation from (4)

and so you can't do the conjunction in step 6 anymore.


Here's an example: if you follow this logic, you would say something like:

"There exists a person who is born in Italy and there exists a person who is born in the USA. Therefore, there exists a person who is born in both Italy and the USA"

which is clearly false: altought there exists a person for each proposition, they are not the same person.


This is even easier if q is the negation of p:

"There exists a number greater than 10, and there exists a number lesser than 10. Therefore, there exists a number that is greater than and lesser than 10 at the same time"

which is clearly absurd

8 0
3 years ago
A line passes through (2, 8) and (4, 12). Which equation best represents the line?
andrezito [222]
If you plug in the x values of both (2, 8) and (4, 12) into each equation, you'll find that y = 2x + 4 gives you the correct y values for both (2, 8) and (4, 12). So that is your answer. 
6 0
3 years ago
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Ken wants to sell some of the baby angelfish when they are old enough. He wants to sell 24 of the angel fish for 40 cents each.
Nina [5.8K]

Answer:

Step-by-step explanation:

trsnymuy,jumythrgegr4trgafbehtrsngyjkuymukyfyjumhfngbdfvsdsfewrgthyjukilk,jmhnbgvfvdfsergthygrnjrsthsgrthyjterefwgrehtryjumhukymjhkuyjmhkijhmkiujhmgngbfvfdbgnyhjhtgrfsdvfbgnhjythrgefvfdbg

6 0
3 years ago
What is the answer 2.07 ÷ 0.9
storchak [24]


The answer is 2.3 right.


5 0
3 years ago
A Salesman worked on a weekly salary of $180.00 . To this was added a commission of 5% on all sales over $500. It his sales for
Anvisha [2.4K]
250x.05 = 12.5 + 180 = 192.50
4 0
3 years ago
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