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marta [7]
3 years ago
15

You own two vehicles. a car

Mathematics
1 answer:
SOVA2 [1]3 years ago
7 0
Well, If I were to own two vehicles (cars), then I would choose to have solar panel or chargeable cars. I say this because all the toxic fumes that come from gas and oil will be greatly. I recommend that everyone purchases such cars because it is great for the economy and keeps your environment healthy (:
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The one that doesn’t go through the origin
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What is the value of X
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X = 1 or any thing really it depends on the way you look at it
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Refer to the table. Which lap has the slowest time
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Lap 2 because the bigger the number in time the longer.


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For each statement, write what would be assumed and what would be proven in a proof by contrapositive of the statement. Then wri
Anna007 [38]

Answer:

a)

Given Statement - If x and y are a pair of consecutive integers, then x and y have opposite parity.

Proof by Contrapositive:

Assumed statement: Suppose that integers x and y do not have opposite parity.

Proven Statement: x and y are not a pair of consecutive integers.

Proof -

x = 2u₁ , y = 2u₂

Then

(x, x+1) = (2u₁ , 2u₁ + 1) = (Even, odd)

If y = 2u₁ + 1

Not possible

⇒x and y are not a pair of consecutive integers.

Hence proved.

Proof by Contradiction:

Assumed statement: Suppose x and y are not a pair of consecutive integers.

Proven Statement: Suppose x and y do not have opposite parity.

Proof -

If x and y are not a pair of consecutive integers.

⇒ either x and y are odd or even

If x and y are odd

⇒x and y have same parity

Contradiction

If x and y are even

⇒x and y have same parity

Contradiction

(b)

Proof by Contrapositive:

Assumed statement: Let n be an integer such that n is not odd (i.e. n is an even integer)

Proven Statement: n² is not odd (i.e n² is even)

Proof -

Let n is even

⇒n = 2m

⇒n² = (2m)² = 4m²

⇒n² is even

Hence proved.

Proof by Contradiction:

Assumed statement: Let n be an integer such that n² be odd.

Proven Statement:  suppose that n is not odd (i.e n is even)

Proof -

Let n² is odd

⇒n² is even

⇒n² = 2m

⇒2 | n²

⇒2 | n

⇒n = 2x

⇒ n is even

Contradiction

8 0
3 years ago
On the first day of travel, a driver was going at a speed of 40 mph. The next day, he increased the speed to 60 mph. If he drove
Fantom [35]

Let t become the time he spent commuting on the first day of his vacation.

It is then calculated as t + 2.

\to 40\times(t+2) = 60(t) + 20 \\\\\to 40t+80 = 60t + 20 \\\\\to 80-20 = 60t + 40t \\\\\to 60 = 20t  \\\\\to t=\frac{60}{20} \\\\\to t=\frac{6}{2} \\\\\to t= 3\\\\

It traveled 40\times (3 + 2) + 20 = 40\times 5 + 20 = 200+20=220 miles on its first day of operation.

The car traveled 180\ miles on the second day, which was 60 \ miles \times 3.

So,

Total mileage= first day traveled + second day traveled = 220+ 180= 400 \miles

Learn more:

Total distance traveled: brainly.ph/question/11690847

8 0
3 years ago
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