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-BARSIC- [3]
2 years ago
11

Contrapositive of p → q

Mathematics
2 answers:
mars1129 [50]2 years ago
6 0
<span>In logic, contraposition is a law that says that a conditional statement is logically equivalent to ... For example, if we want to prove that every girl in the United States (A) has brown hair (B), we can try to directly prove A → B {\displaystyle A\to B} A\to B ... A proposition Q is implicated by a proposition Pwhen the following ...</span><span>
</span>
Lady bird [3.3K]2 years ago
3 0

Answer:

¬q ⇒¬p

Step-by-step explanation:

You can see it with an example. Let p and q be sets and let p be inside of q (p⇒q). Then, If something is not in q it will not be in p either (¬q ⇒¬p).

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A collection of nickels and dimes is worth $4.40. There are 53 coins in all. How many nickels are there?

Nickel is a US coin worth 5 cents or 0.05.
Dime is a US coin worth 10 cents or 0.10

n + d = 53
0.05n + 0.10d = 4.40

n = 53 - d
0.05(53 - d) + 0.10d = 4.40  
2.65 - 0.05d + 0.10d = 4.40
0.05d = 4.40 - 2.65
0.05d = 1.75
d = 1.75 / 0.05
d = 35

n = 53 - d
n = 53 - 35
n = 18 

There are 18 nickels and 35 dimes.

0.05n + 0.10d = 4.40
0.05(18) + 0.10(35) = 4.40
0.90 + 3.5 = 4.40
4.40 = 4.40
4 0
3 years ago
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If you started the problem by converting 1 pound to 16 ounces, would you get the same results?
Arturiano [62]

Answer:

yes

Step-by-step explanation:

you would get results bc results are results

4 0
3 years ago
In the figure, AE = 2, CE = 3, and DE = 4. What is the length of BE?
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The answer is c 5 welcome
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Simplify the following expression.<br><br> ‐3 + 7(a – 3b – 1) – 4(10 – a + 2b)
mihalych1998 [28]

Answer:

11a − 29b − 50

Step-by-step explanation:

Subtract 7 from − 3

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What value of x satisfies this equation (5x + 20) = 2
FrozenT [24]

Answer:

x equals -3.6

Step-by-step explanation:

5 something +20 is supposed to be 2, so you take the two off of the 20 and get 18, then divide the 18 by 5 and you'll get 3,6 and logically since it needs to be negative you need the minus before it.

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