3 years ago

Which counterexample shows that the conjecture "Every parallelogram is also a rectangle" is false?

Mathematics

2 answers:

mafiozo [28]3 years ago

5 0

A parallelogram without four right angles would prove that to be false.

Ivanshal [37]3 years ago

3 0

Yep that'd be false since they are also rectangles

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Is (2,3) a solution to the system of inequalities 4x+3y<20 <br> 10x+y>10

stiks02 [169]

Yes it is a solution because if you take the equation and plug the point in for the x and y :

4 (2) + 3 (3) < 20
8 + 9 < 20
17 < 20
which is true

10 (2) + (3) > 10
20 + 3> 10
23>10
which is also true

7 0

3 years ago

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The softball team has won 7 of their last 8 games.

Inga [223]

Answer: 88%

Step-by-step explanation:

(7/8)*100=87.5

Which is approximately 88.

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2 years ago

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Frank has 6 red socks, 8 black socks, and 10 white socks in his sock drawer. If Frank blindly reaches into his sock drawer, what

Firlakuza [10]

Answer:

Step-by-step explanation:

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2 years ago

Consider the power 34.

Vikentia [17]

I believe it’s 3 to the 34 power

4 0

2 years ago

The speed of light is estimated at 186,000 miles per second rounded to the nearest thousand miles per second.

Sedbober [7]

It was rounding to the nearest THOUSAND.

We are looking at the thousands place, keep that in mind.

Remember: everything 5 and above is rounded up, everything below 5 is rounded down.

186,789 is above 500, it is rounded to 187,000

186,899 is above 500, it is rounded to 187,000

185,990 is above 500, it is rounded to 186,000

and 185,190 is below 500, it is rounded to 185,000

Only one matches the criteria of the question:

185,990 is above 500, it is rounded to 186,000

therefore the answer is 185,990 miles per second

Have a fantastic day!

Read more on Brainly.com - brainly.com/question/10945335#readmore

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3 years ago