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Juliette [100K]
3 years ago
10

Which of the following is not an attribute of parallelograms?

Mathematics
2 answers:
nignag [31]3 years ago
7 0
On a basic parallelogram, opposite sides are parallel, diagonals bisect each other and, consecutive angles are supplementary. However on a parallelogram diagonals aren't congruent.

So the answer is D

Yakvenalex [24]3 years ago
4 0

Answer: is this right

Step-by-step explanation:

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A cylinder with a height of 2 and a diameter of 8. Please mark brainliest.
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3 years ago
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If I buy a stereo for $245 and this includes GST of 10%, what is the pre-GST price?
Ivan

Answer:  $222.73

===========================================

Work Shown:

x = pre-GST price

10% of x = 0.10x = tax amount

x + 0.10x = 1.10x = post-GST price = 245

1.10x = 245

x = 245/1.10

x = 222.7272 approximately

x = 222.73 is the price before tax.

------------

Check:

10% of 222.73 = 0.10*222.73 = 22.273 = 22.27

The tax amount ($22.27) is added to the pre-GST price to get

22.27+222.73 = 245

which matches the post-GST price mentioned.

The answer is confirmed.

Or another way to confirm the answer is to calculate this

1.10*222.73 = 245.003 = 245

6 0
2 years ago
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How do you simplify(n!)^2/(n+1)!(n-1)!
ANTONII [103]
We haven n! = (n-1)! x n and (n+1)! = n! x (n + 1);
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Finally, [n! x (n-1)! x n] / [n! x (n + 1) x (n-1)!] = (n+1)/n;
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A certain triangle has two 45° angles. What type of triangle is<br> it?
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Answer:

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Step-by-step explanation:

an acute triangle has angles that are less than 90 degrees

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obtuse triangles have angles greater than 90 degrees

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Step-by-step explanation:

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